Biography:

Moni Behar completed his PhD at the University of Buenos Aires and his Post-doc at the Purdue University (in) USA. He is an Emeritus Professor of the Universidade Federal do Rio Grande do Sul and a full Professor of the Department of Physics. He has published more than 300 papers in reputed journal and has been Member of the Editorial Board of several journals.

Abstract:

In this presentation, we show data on the Coulomb heating induced by H, B, and C molecular beams channeling along the Si<110> direction. The simultaneous detection of Si K alpha X rays and the corresponding backscattered particles and molecules established the grounds of the determination of the corresponding Coulomb heating. That is the molecular transversal energy due to the Coulomb explosion transferred to the target atoms. The energies used for each ion were for H at 150 keV/atom, for B, it spans a large energy interval between 800 and 2200 keV/atom and finally for C, between 800 and 2400 keV/atom. As a consequence, we have obtained two striking results. First, all the experimental values fall on a straight line when they are plotted as a function of the stored energy per atom, suggesting some kind of “universal behavior”. Second, the analysis of the whole set of experimental data shows that the Coulomb heating scales with 2/3 of the stored potential energy per ion regardless the ion atomic number. The corresponding experimental values are in good agreement when compared with the theory developed for the present case. Finally, we compared the present results with the ones obtained in the Si <100> direction, which were obtained under similar experimental and theoretical conditions. It has shown striking differences between both cases based on the mean charge state obtained in each experiment.

Biography:

Elena V Orlenko has completed her PhD from St. Petersburg State Polytechnic University. She is full Professor for the Theoretical Physics Department and Director of a research team focusing on spin ordering in the system of identical particles with “high” spins and scattering processes of atomic particles with electron exchange at the Peter the Great St. Petersburg Polytechnic University. Her research interests include magnetic properties of low dimension atomic Bose- and Fermi-gases with “high”-spins of particles, magnetic properties and magnetic ordering in the system of “high” spin particles, exchange and super-exchange interaction in many fold centered atomic systems and developing the formalism of exchange perturbation theory, scattering processes of atomic particles with electron exchange, invariant exchange perturbation theory and super-radiation phenomena of the multi-level atomic systems

Abstract:

The current paper is devoted to the consideration of sp²-carbonaceous fullerenes molecules in homogeneous magnetic field. Due to reduction system symmetry in magnetic field to the axial type, the energy splitting gives rise to forming dominant atomic structures in fullerenes molecule with local symmetries. Spin-orbit interaction plays a crucial role in this phenomenon. The current paper is aimed at determination of such spin-orbit coupling parameters as energy E_so and constant a_so as well as g-factors Lande’ for magnetization study of the C₆₀-based compounds in magnetic field. Magnetization study of the C₆₀-based compounds in magnetic field for a wide temperature range demonstrate an amazing feature of its behavior, such as a reduced Lande’ g-factor values g<1. It is shown in experiments a variability of fullerene C₆₀ g-factor in the course of magneto-optical study at pulsed magnetic field up to 32 T in the frequency range ν=60−90 GHz at T=1:8K. There are three values of g-factors: namely: g₁ = 0.43±0.03; g₂ = 0.27±0.02 and g₃=0.19±0.01. Such experiments give rice to assume 1) the availability of existence of three different independent configurations of local spins in the molecule; 2) the influence of the spin-orbit coupling onto forming the Eigen state with determined total angular momentum. There are three dominant symmetric atomic groups of C₆₀-Y_h corresponding to the polar point groups (C_3v, C₃, C_2v, C₂, C_s, C₁), which respond to a magnetic field: 1) a hexagon-faces 2) edges (double bonds, lying on the circle about the direction of magnetic field); 3) vertices (of pentagons, transited about magnetic field direction).

Biography:

Nenad Balaneskovic has completed his PhD from University of Technology Darmstadt. From October 2011 till March 2016, he was a member of a research team focusing on Fundamentals of Quantum Mechanics, Quantum Information and Quantum Computation at the Institute of Applied Physics of the University of Technology in Darmstadt. His research interests include quantum networks and random unitary operations, quantum Darwinism and the emergence of classicality and numerical application of graph theory.

Abstract:

We discuss characteristic properties of Quantum Darwinism (QD) when pure decoherence is disturbed by dissipation and dephasing. Based on digraph interaction models of open qubit systems interacting with their respective environment by iterated and randomly applied (controlled-NOT-type) unitary operations, we introduce a unitary two-qubit dissipative-dephased operator. We investigate the QD-appearance of Classicality from the analytically determined asymptotic dynamics of the resulting quantum Markov chain. In addition, we concentrate on interaction digraphs which comprise environmental qubits that do not interact among themselves by unitary quantum operations and are thus suitable to describe physically objective quantum measurements performed on an open system by autonomous observers (environmental qubits). In particular, we investigate whether it is possible to achieve the most efficient storage of classical information about a system into its environment by altering the strength parameters of the dissipative-dephased operator. Furthermore, we discuss the structure of the corresponding dissipative-dephased attractor spaces of our extended qubit-model of QD.

Biography:

Marc H Weber completed his PhD in 1989 on positrons (antiparticles of electrons) interacting with single crystal surfaces from City College of the City University of New York. He is a Research Professor at Washington State University and has worked on positron in atomic physics, high energy physics and materials science.

Abstract:

Antimatter is the ideal medium for storing energy per mass. Upon annihilation with matter, 100% of the mass is converted to energy. Positron-electron annihilations result in only energetic photons which could be used for propulsion or conventional energy production. Of the three key challenges: Creation of antimatter, conversion to energy, and confinement of large quantities for long times, the latter is paramount for this idea to work. Squeezing like charged particles to high densities requires forces that exceed technical capabilities. An experiment aimed at alleviation of this space-charge challenge is discussed. Rather than storing all charged particles in a single trap of large magnetic and electric fields, an array of micro-traps is used. It features high length-to-diameter aspect ratios and metallic walls. Image potentials in the walls effectively make charges in one micro-trap invisible to charges in any other trap. The electric potential required for axial confinement can be lowered by many orders of magnitude. Ultimately, it is expected to store on the order of 100 billion positrons in 20000 micro-traps in a 50 mm diameter by 100 mm length cylindrical volume. To date, tests with electrons are performed. Confinement up to 1 second has been achieved for a partial trap. The progress and future direction of the experiment will be discussed along with potential uses other than energy storage.

Biography:

Abstract:

Biography:

Xiaoxing Zhang received his Master’s degree from Hubei University of Technology. In 2006, he received PhD from School of Electrical Engineering, Chongqing University. From 2003 to 2013, he worked at Chongqing University as Director of High Voltage laboratory and Associated Director of State Key Laboratory of Power Transmission Equipment & System Security and New Technology. In January 2014, he was transferred to work at the School of Electrical Engineering, Wuhan University. He has published 184 papers in domestic and international academic journals and conferences. His research interests include researching on-line monitoring and fault diagnosis for high voltage electrical equipment for a long time. He has introduced advanced nanotechnology to detect SF₆ fault characteristic gases and successfully synthesized highly sensitive and selective nano-sensors.        

Abstract:

Sulfur hexafluoride (SF₆) insulating gas possesses outstanding arc quenching and insulation performance, which is the most, used filled gas in gas-insulated equipment, such as gas-insulated switchgear (GIS), gas-insulated lines (GIL), gas circuit breaker (GCB). However, SF₆ gas will inevitably decompose to components (SO₂, H₂S, SOF₂, SO₂F₂ and CF₄ et. al.) under partial discharge and disruptive discharge (surface flashover and creeping discharge) due to the occurred insulation defects in production and long term operation process. The decomposition of SF₆, which significantly reduces the dielectric strength of SF₆ insulted equipment, may eventually lead to the breakdown of insulation equipment and even paralyze the whole power supply system. Therefore, detecting the insulation status becomes indispensable in an attempt to ensure the running stability of insulation equipment. Basing on current high sensitive chemi-resistor detection method, the insulation status of SF₆-insulated equipment can be monitored on-line in real time through detecting the decomposition components: SO₂, H₂S, SOF₂ and SO₂F₂. This study introduces the research progress of gas sensors using different materials such as modi-TiO₂ nanotubes, single wall carbon nano-tube and polyaniline thin-film. In order to understand to detection mechanism, the adsorption properties for gas molecules of decomposition components on the surface of gas sensitive material are studied based on the Dmol³ module of Materials Studio. In addition, the sensitivity and selectivity of prepared gas sensor to different decomposition components are studied under different pressures, concentration and temperature.

Biography:

Norimichi Kojima has completed his PhD from Kyoto University, Japan. In 1994, he was appointed as a full Professor, and the Vice-President between 2009 and 2011, the University of Tokyo, and became the Emeritus Professor in 2015. After retiring from the University of Tokyo, he moved to Toyota Physical and Chemical Research Institute, as a fellow. His current interests include the electronic and structural properties of nanoparticles by means of Mössbauer Spectroscopy.

Abstract:

The evolution of geometrical structures of thiolate (SR)-protected gold clusters, Au n(SR)m, in a n=10-55 size range, was studied by means of ¹⁹⁷Au Mössbauer spectroscopy. Successful analysis of the Au₂₅ (SR)₁₈ spectrum, based on the crystallographically determined structure, enabled us to estimate quantitatively the numbers of gold atoms coordinated by different numbers (0, 1, and 2) of SR ligands for all the Aun(SR)m clusters. In Au₁₀(SR)₁₀, all the gold atoms are bonded to SR ligands, indicating –Au–S(R)– cyclic structures. A catenane structure was proposed for Au₁₀ (SR)₁₀. At n = 15, gold atoms bonded to a single SR ligand appeared, suggesting the formation of small clusters. At n = 25, a single Au atom without the SR ligation appeared, consistent with the formation of an icosahedral Au₁₃ core protected by six staples, –S(R)–[Au–S(R)–]₂. At n = 39, the number of Au atoms without the SR ligation increases from one to two, and the ¹⁹⁷Au Mössbauer spectrum is consistent with the face-fused bi-icosahedral Au₂₃ core. These results demonstrate that ¹⁹⁷Au Mössbauer spectroscopy will provide detailed information on the structures of thiolate-protected gold clusters whose single crystals are difficult to make.

Biography:

Eugene Oks received his PhD from the Moscow Institute of Science and Technology, and later the highest degree of Doctor of Sciences from the Academy of Sciences of the USSR. He worked in Moscow (USSR) as the Head of a research unit (Center for Studying Surfaces and Vacuum), then – at Ruhr-University-Bochum (Germany) as the Invited Professor, and for the last 26 years – at the Physics Department of the Auburn University (USA) in the position of Professor. His research areas: Atomic/molecular physics, plasma physics, laser physics, nonlinear dynamics, and astrophysics. He founded/co-founded and developed new research fields: Intra-Stark spectroscopy, microwave “lasing” without inversion, quantum chaos. He developed a large number of advanced spectroscopic methods for diagnosing various laboratory and astrophysical plasmas. He published over 300 papers and 4 books. He is the Chief Editor of the journal “International Review of Atomic and Molecular Physics”, a member of the Editorial Boards of the two other journals (International Journal of Spectroscopy and Open Journal of Microphysics), a member of the International Program Committees of the two conferences (Spectral Line Shapes and Zvenigorod Conference on Plasma Physics and Controlled Fusion).

Abstract:

The talk presents the following counterintuitive theoretical results breaking several paradigms of quantum mechanics and providing alternative interpretations of some important phenomena in atomic and molecular physics. 1) Singular solutions of the Schrödinger and Dirac equations should not have been always rejected. They can explain the experimental high-energy tail of the linear momentum distribution in the ground state of hydrogenic atoms. This is a unique way to test intimate details of the nuclear structure by performing atomic (rather than nuclear) experiments and calculations. 2) Charge exchange is not really an inherently quantal phenomenon, but rather has classical roots. It also has application in continuum lowering in plasmas. 3) The most challenging problem of classical physics that led to the development of quantum mechanics is the failure to explain the stability of atoms which can be solved within a classical formalism that has its roots in Dirac’s works. The result is the appearance of classical non-radiating states coinciding with the corresponding quantal stationary states. The underlying physics can be interpreted as a non-Einsteinian time dilation. It is also an advanced classical description of electronic degrees of freedom in chemical physics.

Biography:

Elena V Orlenko has completed her PhD from St. Petersburg State Polytechnic University. She is a Full Professor in Theoretical Physics Department and Director of a research team focusing on “Spin ordering in the system of identical particles with high spins and scattering processes of atomic particles with electron exchange” at Peter the Great St. Petersburg Polytechnic University.

Abstract:

We present the formalism of Time-dependent Exchange Perturbation Theory (TDEPT) built to all orders of perturbation, for the arbitrary time dependency of perturbation. The theory takes into account the rearrangement of electrons among centers. The elements of the scattering S-matrix and transitions T-matrix and the formula for the electron scattering differential cross section are derived. The application of the theory to scattering and collision problems is discussed as an example of positron scattering on a lithium atom, calculating the differential and total cross-sections. The strength of the interaction between particles during collisions is described by a scattering cross-section, or by an effective cross-section. We consider the collision associated with the redistribution of electrons, as the collisions of positrons with neutral atoms accompanied by charge transfer. The obtained matrix element contains the exchange integrals. These integrals take into account the permutations of the electrons between the centers (Li and positron). The signs of these integrals are defined by the Young diagrams and depend on the total spin value. At a simulated differential cross section as a function of the scattering angle at different energies of the incident positron, one can observe regions of a “twisted ridge” for certain values of wave vector k and a scattering angle θ. It has been previously reported that under similar conditions, when an alpha-particle is colliding with a lithium atom, the differential cross-section has a smooth appearance without ridges. The same “twisted ridge” were theoretically predicted for the scattering of proton by lithium atom, for other values of vector k and angle θ.

Biography:

Natig Atakishiyev has completed his first Doctoral degree (Candidate of Physical and Mathematical Sciences) in 1971 from Institute for High Energy Physics, Protvino, Russia, and second one (Doctor of Physical and Mathematical Sciences) in 1987 from N. N. Bogolyubov Institute for Theoretical Physics, National Academy of Sciences of Ukraine, Kiev, Ukraine. He is a Researcher (Investigador Titular C) in Mathematical Physics from Instituto de Matemáticas, Universidad Nacional Autónoma de México. His research interests include algebraic approach to different equations and operators; special functions and orthogonal polynomials, their group-theoretic interpretation; integral and discrete Fourier transforms.

Abstract:

An explicit form of a discrete analogue of the quantum number operator is constructed in terms of the different lowering and raising operators that govern Eigen vectors of the 5D discrete (finite) Fourier transform. This discrete number operator has distinct Eigen values, which are employed to systematically classify Eigen vectors of the 5D discrete Fourier transform, thus avoiding the ambiguity caused by the well-known degeneracy of the Eigen values of the latter operator. It is found that the hidden symmetry of the discrete number operator manifests itself in the form of the Lie super algebra spl (5, 5).

Biography:

Doris Jakubassa-Amundsen has completed her PhD in Natural Sciences from the Technical University of Munich, Germany, and her PhD in Mathematics in 2004 from the LMU University of Munich. She is privatdozent at the Goethe University of Frankfurt, Germany and Research Associate at the LMU University of Munich. His research interests include theory of radiation from ion-atom and electron-nucleus collisions, low-energy nuclear excitation by electron impact, polarization, etc.

Abstract:

A precise knowledge of electron-nucleus bremsstrahlung is important for estimating its influence on the electron spectra from nuclear excitation. In coincidence experiments, planned at the S-DALINAC accelerator set-up in Darmstadt (Germany), the photons from electron bremsstrahlung compete with those from 'nuclear bremsstrahlung' resulting from the subsequent decay of the excited nucleus. The sensitivity of such experiments to nuclear structure effects can be increased by measuring, beyond the intensity, the polarization correlations between the projectile electron and the emitted photon. The relativistic partial-wave approach to electron bremsstrahlung is extended to collision energies up to 30 MeV in order to test the validity of the PWBA for heavy nuclei and to extrapolate the extracted PWBA enhancement factors to somewhat higher energies. Our examples include the bremsstrahlung contribution to the excitation spectra from 46MeV e+¹⁵⁰Nd collisions, recently measured at the S-DALINAC, as well as predictions for the coincident (e; e⁰ ) experiments focusing on the 2+ excitation of ⁹²Zr.

Biography:

Doris Jakubassa-Amundsen has completed her PhD in Natural Sciences from the Technical University of Munich, Germany, and her PhD in Mathematics in 2004 from the LMU University of Munich. She is privatdozent at the Goethe University of Frankfurt, Germany and Research Associate at the LMU University of Munich. His research interests include theory of radiation from ion-atom and electron-nucleus collisions, low-energy nuclear excitation by electron impact, polarization, etc.

Abstract:

A precise knowledge of electron-nucleus bremsstrahlung is important for estimating its influence on the electron spectra from nuclear excitation. In coincidence experiments, planned at the S-DALINAC accelerator set-up in Darmstadt (Germany), the photons from electron bremsstrahlung compete with those from 'nuclear bremsstrahlung' resulting from the subsequent decay of the excited nucleus. The sensitivity of such experiments to nuclear structure effects can be increased by measuring, beyond the intensity, the polarization correlations between the projectile electron and the emitted photon. The relativistic partial-wave approach to electron bremsstrahlung is extended to collision energies up to 30 MeV in order to test the validity of the PWBA for heavy nuclei and to extrapolate the extracted PWBA enhancement factors to somewhat higher energies. Our examples include the bremsstrahlung contribution to the excitation spectra from 46MeV e+¹⁵⁰Nd collisions, recently measured at the S-DALINAC, as well as predictions for the coincident (e; e⁰ ) experiments focusing on the 2+ excitation of ⁹²Zr.

Biography:

John Morrison received his PhD in Physics from Johns Hopkins University. After working as a Research Associate at the Argonne laboratory, he moved to Sweden where he received a number of grants from the Swedish Research Council to build a research group in theoretical atomic physics at Chalmers University of Technology in Gothenburg, Sweden. His research in Sweden led to the publication of the monograph Atomic Many-body Theory, which originally appeared as Volume 13 of the Springer Series on Chemical Physics. The second edition of the book, which was published as Volume 3 of the Springer Series on Atoms and Plasmas, has become a Springer classic. Returning to the United States in 1983, he obtained a faculty position in the Department of Physics and Astronomy at the University of Louisville where he continues to carry on research in atomic and molecular physics. The second edition of his recent textbook, “Modern Physics for Scientists and Engineers” (Elsevier, 2015), is based on his teaching of modern physics and quantum mechanics at University of Louisville. His research interests include theoretical atomic and molecular physics with applications particularly to astrophysics.

Abstract:

A summary will be given of various approaches that can be used to perform numerical Hartree-Fock method and many-body calculations on atoms and molecules. The theoretical approaches considered include the multi-configuration Hartree-Fock method and many-body perturbation theory. For light atoms and molecules, more than 98 percent of the correlation energy is due to pair excitations. Because molecules lack spherical symmetry, Schrodinger-like equations for molecules typically involve many more independent variables. While, the Hartree-Fock equations for atoms involve a single radial variable and the two-electron pair equation for atoms involve two radial variables, the Hartree-Fock equations for diatomic molecules involves two independent variables and the pair equation for diatomic molecules involve five independent variables. To deal with these problems of higher-dimensionality, my mathematical collaborators and I have developed numerical methods for dividing the variable space into smaller sub-regions in which the equations can be solved independently. This domain decomposition theory is described and numerical results are given for Hartree-Fock calculations for diatomic molecules and for numerical solutions of the first-order pair equations which can be used to evaluate the Goldstone diagrams that arise in many-body calculations of molecular spectra. The goal of our calculations is to describe the energy of two helium atoms approaching each other in a cold atomic collision and to obtain the spectral fingerprints of CO and OH molecules in planetary atmospheres.

Biography:

Xiaodong Li received PhD from Universite de Montreal in 1993 and MS from Nankai University in 1981. He is teaching in NUDT as a Professor with the research fields of interest in polymer chemistry, material chemistry and physics. He has published more than 100 papers in reputed journals.

Abstract:

To explain some basic facts of atomic nucleus, a nuclear structure model of “ring plus extra nucleon” is proposed. For nuclei larger than ⁴He inclusive, protons (P’s) and neutrons (N’s) are basically bound alternatively to form a ^2Z_Z E ring. The ring folds with a “bond angle” of 90Ëš for every 3 continuous nucleons to make the nucleons packed densely. Extra N(‘s) can bind to ring-P with the same “bond angle” and “bond distance”. When 2 or more P’s are geometrically available, the extra N tends to be stable. Extra P can bind with ring N in a similar way when the ratio of N/P <1 although the binding is much weaker. Even-Z rings always have superimposed gravity centers of P and N; while for odd-Z rings, both centers of P and N must be eccentric. The eccentricity results in a depression of E_B and therefore specific zigzag features of E_B/A. This can be well explained by the shift of eccentricity by extra nucleons. Symmetrical center may present in even-Z rings and normal even-even nuclei. While for odd-Z ring, only anti-symmetric center (every P can find an N through the center and vice versa) is possible. Based on this model, a pair of mirror nuclei, P_X+nN_X and P_XN_X+n, should be equivalent in packing structure just like black-white photo and the negative film. Therefore, an identical spin and parity was confirmed for hundreds of pairs. In addition, the E_B/A difference of all the mirror nuclei pair is very nearly a constant of 0.184n MeV. Many other facts can also be easily understood from this model, such as the nuclear stabilities of isotopes in elements from He to Ne; the stability sequence of ⁹Be, ¹⁰Be, ⁷Be and ⁸Be; the neutron halo in neutron-rich nuclides; the general rule for most stable isotopes: odd-Z elements are odd A, even-Z elements are even A; and the highest cohesive energy of Li, Be, B atoms in their own elementary group and so on.

Biography:

Abstract:

Atomic energy is the source of power which is another form of electrical energy. This electrical energy is basically the fundamental energy which is the source of all other energy known to world. We can say that from the prediction of genius Albert Einstein for the unification of forces it is the electrical force that is the root cause of all other forces. When a charge particle moves, it produces magnetic force i.e. electrical energy is converted to magnetic energy and charge particle has only electrical energy only. It is the movement of electrical energy that leads to generation of magnetic energy according to the Maxwell’s law. Since these forces are long range forces so when they follow the Maxwell’s law leads to generation of electromagnetic radiation. The weak and strong nuclear forces discovered which is the cause for binding sub-atomic particles into the nucleus is nothing but the electrical energy being converted into sub-atomic particles due to the conversion of electrical energy into mass with the electrical charge of positive and negative character depending upon the orientation of electrical energy into clockwise or anticlockwise direction. The packing of electrical energy into mass is governed by the anti-law that leads the conversion of mass into energy in the atomic energy given by Einstein’s famous relation E=mc2.

Biography:

Mohamed Hamdi is the co-authored more than 80 scientific publications published in international journals and conferences. He was the Chair of the 'Cloud security' industry forum in the IEEE ICC'12 conference (Ottawa, Canada). He has also Chaired and co-chaired international conferences and special issues in international conferences. He has presented multiple tutorials and invited speeches in international conferences such as the GEOSS Forum (Globecom 2011). In addition to this he has been invited at the ITU World Telecom conference to serve as a Panellist in a forum on the Security of Social Networks. Between 2001 and 2005, he has worked for the National Digital Certification Agency (Tunisia) where he was the Leader of the Security Risk Management Team.

Abstract:

During the last couple of decades, quantum computing and information processing has been investigated as an alternative to quench the thirst for speed and computing capacity. Even though the quantum computers built so far are able to perform basic calculations (compared to the huge theoretical potential), this field is perceived by the research community as strongly promising to solve crucial issues in the disciplines of computing, cryptography, information theory, mathematics and physics. For example, in the area of cryptography, the substantial potential brought by quantum computing is corroborated by the roadmap established NIST regarding the future development of the underlying technologies.

This talk addresses the opportunities, challenges, and obstacles related to the development of quantum cryptography in the near future. The most important aspects that will be covered include: Quantum cryptography fundamentals: This section will illustrate how harnessing the power of atoms and molecules allow performing memory and processing tasks that are relevant to cryptography; Technological feasibility: Beyond the theoretical understanding of quantum cryptography, the experimental platforms that corroborate the feasibility of quantum-based solutions for cryptographic problems will be covered in this section. For instance, private communication of quantum channels, repeaterless quantum communications, and photonic integrated circuits for quantum communications will be discussed. Moreover, an overview on PQCrypto 2014 will imbue more details to the attendees about the concrete aspects of quantum cryptography.

Quantum-based cryptanalysis: Besides the opportunities behind the use of quantum computing to improve the robustness of cryptographic solutions, the power of atoms presents an important tool that can be used in cryptanalysis. Several attempts did show that currently-used cryptographic algorithms can be broken using quantum computers. Despite the disadvantages of the current solutions in terms of cost-effectiveness, such solutions are expected to proliferate in the near future. Hence, the strategies used to implement quantum-based cryptanalysis will be addressed at this level.

Biography:

Nicolae A Enaki was born on 27 May in 1928 in Radenii Vechi, Ungheni, Republic of Moldova. In 1985 he was the Candidate in Physical and Mathematical Sciences (PhD). In 1993 Dr. in Physical and Mathematical Sciences (Dr. habilitatus), Academy of Sciences, Institute of Applied Physics: One- and two-photon cooperative phenomena in Optics. From 2002 he was the Professor of Physics of Moldova State University, Chisinau. In 2006 he became Head of Quantum Optics and Kinetic Processes Laboratory, Institute of Applied Physics, Academy of Sciences of Moldavia.

Abstract:

The three particle cooperative emission consisted from two dipole-active and one dipole-forbidden sub-system of radiators is proposed in the process of interaction through the vacuum or thermal field. It is demonstrate that in such three radiator interaction the collective decay rate becomes proportional to the product of the numbers of radiators in each subsystem: N₁ N₂ N₃. The proposed quantum kinetics takes into consideration single and two photon cooperative exchanges between dipole active and dipole forbidden subsystems of radiators (nuclei, atoms, molecules). The three particle cooperative interaction through the thermal bath and vacuum field takes place during the mutual influences of the single- and two-photon popularization between the pairs of dipole active atoms with the popularization of the dipole forbidden radiator of another ensemble. To describe this effect it is introduced the new correlation functions between the popularization of three radiators belonging to inverted systems of dipole active and dipole forbidden subsystems. The main difference between the Dicke super-fluorescence and new collective effect consists in the establishment of cooperative effect between one dipole-forbidden radiator in two-quantum exchanges with two dipole active radiators. After that the theory is extended to the ensemble of N such three-particle blokes. The cooperative decay rate becomes proportional to the cube of such radiators, N³.

Biography:

S L Lebedev graduated from Physical School of Dnepropetrovsk State University, Ukraine. He has completed his PhD from P N Lebedev Physical Institute of Russian Academy of Sciences. He is Associated Professor and Director of a research team focusing on Quantum Electrodynamics and High Energy Phenomena at Surgut State University (Russian Federation).

Abstract:

The spin radiation effects in the one-particle sector of QED have a twofold origin and could be understood in terms of the Frenkel classical model of “rotating electron”. The imaginary part of the mass shift and the radiation power receive the spin contributions of two kinds. The first one connected with the fermion magnetic moment which constitutes the additional source of the electromagnetic radiation; the contributions of the second kind have the opposite sign and arise owing to the small alteration in the particle acceleration which resulted from the Frenkel addition to the mass of the particle. The contributions of the second kind into above mentioned quantities are dominated over the first one, so giving an explanation to the `wrong` sign of the full spin contributions. We show that not only the sign but the coefficients as well can be explained with the wanted accuracy within classical electrodynamics if one would calculate the spin additions to the mass shift and to the power of radiation with the use of canonical variables. The analysis of Novosibirsk 1984-year experiment on the observation of spin light confirms the unusual dependence of radiation on the spin direction.

Biography:

Nada Elzein Eisa Omer has completed his PhD in Physics in the year 2004 from Gazi University, Turkey. He is an Associate Professor of Physics at University of Dammam. He has published more than twenty (20) research papers both in local and international journals. His research interests are atomic physics, computational physics and quantum physics.

Abstract:

Chemisorption of hydrogen on transition metals has proven great significance in many industrial treatments and processes such as hydrogen storage, corrosion monitoring and controlling and clean fuel production. The simplest chemisorbed species and ideal system to study is the chemisorption of H atom on surfaces. Molecular dynamic method reporting a quasiclassical simulation of the interaction of H₂ with Cu₁₃ and Pd₁₃ clusters was reported in this study. Embedded-atom (EA) mode potential was used to define the geometry of the cluster and LEPS (London-Eyring–Polanyi-Sato) potential energy function describe and the interaction between the molecule and cluster. The dissociation adsorption probability of the molecule on the cluster were considered, the roles of initial rovibrational states of the H₂ molecule, and the effect of the change of clusters temperature on dissociation were also examined. It was very clear that from the monitored and plotted data, the reaction cross section increase monotonically with increase of initial rovibrational v_i, j_i sates in the ranges (v=0, j=0; 3; 5; 10) and (v=1; 3, j=0) and that the vibration effect was exerting more influence than that of the rotational in increasing the reaction cross section. It was also seen that the temperature change in the range (295K-300) did not report a significance change in Hydrogen dissociation. The simplicity of the technique and the applicability to practical make it a powerful study for atomistic studies of dissociation of H₂ in metallic clusters.

Biography:

Nenad Balaneskovic has completed his PhD from University of Technology Darmstadt. From October 2011 till March 2016, he was a member of a research team focusing on Fundamentals of Quantum Mechanics, Quantum Information and Quantum Computation at the Institute of Applied Physics of the University of Technology in Darmstadt. His research interests include quantum networks and random unitary operations, quantum Darwinism and the emergence of classicality and numerical application of graph theory.

Abstract:

We discuss characteristic properties of Quantum Darwinism (QD) involving pure decoherence, dissipation and dephasing. In particular, we reconstruct and derive the structure of the corresponding dissipative dephased attractor spaces of our random unitary qubit-model of QD and investigate whether QD appears with respect to evolution based on non-Controlled-NOT (non-CNOT) unitary operations. We identify those attractor space structures that allow the most efficient storage of classical information about a system into its environment. Furthermore, we conclude that CNOT-type unitary operations appear to be well suited copy-machines when it comes to efficiently store the information about a system's pointer basis into the environment.

Biography:

M M Abutalib is an Associate Professor of Nuclear Physics and his research area includes Nanomaterials and Materials Science.

Abstract:

The effects of X-ray irradiation on the structural, thermal and optical properties of polyvinyl alcohol–polyethylene glycol–silver (PVA–PEG–Ag) nano-composites have been investigated. The samples of nano-composites were prepared by adding Ag nanoparticles with 5 wt% to the (PVA–PEG) blend. The films of 0.05 mm thickness were prepared by the casting method. These films were irradiated with X-ray doses ranging from 20 to 200 kGy. The resultant effect of X-ray irradiation on the structural properties of PVA–PEG–Ag has been investigated using X-ray diffraction and Fourier transform infrared spectroscopy. Also, thermal property studies were carried out using thermogravimetric analysis. Further, the transmission of the PVA–PEG–Ag samples and any color changes were studied. Fourier transform infrared spectroscopy measurements showed that the crosslinking is the dominant mechanism at the dose range 50–200 kGy. This led to a more compact structure of PVA–PEG–Ag samples which resulted in an improvement in its thermal stability with an increase in the activation energy of thermal decomposition. Moreover, the color intensity ΔE was greatly increased with an increase in the dose and was accompanied by a significant increase in the yellow color component.

Biography:

Asmaa A Hendi has completed her PhD from King Abdulaziz University (KAAU) and Post-doctoral studies from the same university. She has published more than 25 papers in reputed journals and has been serving as a Lecturer and member of several physics associations in Saudi Arabia. She has attended and participated in many national and international conferences. She also attended and participated in many national and international conferences and has received scientific publishing awards.

Abstract:

Nanocrystalline of Cu₂O thin film was synthesized by sol–gel spin-coating technique. The spectrophotometric characteristics of transmission and reflection were studied for the film deposited on glass substrate. The optical absorption measurements near the absorption edge indicate that the absorption mechanism is due to allowed direct transition with energy gap value of 2.09eV. The current–voltage characteristics of Al/Cu₂O/p-Si/Al diode were studied under dark and various light intensities in the range 20–100mW/cm². The main diode parameters such as barrier height, ideality factor, series resistance were calculated from the analysis of current–voltage characteristics and studied under various illumination intensities. Moreover, the results indicate that the diode has a high photo-responsivity and the photocurrent increases with increasing light intensity which supports the availability of the diode for photosensor applications. The capacitance and conductance characteristics indicate that the diode highly depends on both voltage and frequency. Higher increase in the capacitance under low frequency as well as the presence of a characteristic peak in the capacitance– frequency characteristics indicates the presence of interface states. Moreover, the stronger parameters of the diode performance such as series resistance and interface states were extracted from the capacitance–voltage–frequency and conductance–voltage–frequency characteristics.