The Experts below are selected from a list of 37011 Experts worldwide ranked by ideXlab platform
I. B. Khriplovich - One of the best experts on this subject based on the ideXlab platform.
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Positron production in collision of Heavy Nuclei
The European Physical Journal Plus, 2017Co-Authors: I. B. KhriplovichAbstract:We consider the electromagnetic production of positron in the collision of slow Heavy Nuclei, with the simultaneously produced electron captured by one of the Nuclei. The cross-section of the discussed process exceeds essentially the cross-section of $e^{+}e^{-}$ production.
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Electromagnetic production of positrons and electrons in collisions of Heavy Nuclei
International Journal of Modern Physics A, 2016Co-Authors: I. B. KhriplovichAbstract:We consider the electromagnetic production of positrons and electrons in collisions of slow Heavy Nuclei. This process is dominated by emission of positrons, with the electrons captured by nucleus.
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Positron production in collision of Heavy Nuclei
arXiv: Nuclear Theory, 2016Co-Authors: I. B. KhriplovichAbstract:We consider the electromagnetic production of positron in collision of slow Heavy Nuclei, with the simultaneously produced electron captured by one of the Nuclei. The cross-section of the discussed process exceeds essentially the cross-section of $e^+e^-$ production.
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electromagnetic production of electron and positron in collisions of Heavy Nuclei
arXiv: High Energy Physics - Phenomenology, 2014Co-Authors: I. B. KhriplovichAbstract:We consider the cross-section of electromagnetic production of $e^+ e^-$ pair in adiabatic scattering of Heavy Nuclei.
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Electromagnetic production of an electron-positron pair in collisions of Heavy Nuclei
JETP Letters, 2014Co-Authors: I. B. KhriplovichAbstract:The cross section for the electromagnetic production of a e+eā pair in the adiabatic scattering of Heavy Nuclei has been considered.
N Sowmya - One of the best experts on this subject based on the ideXlab platform.
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competition between spontaneous fission ternary fission cluster decay and alpha decay in the super Heavy Nuclei of z 126
Nuclear Physics, 2018Co-Authors: H C Manjunatha, N SowmyaAbstract:Abstract Super Heavy Nuclei may decay through the different decay modes such as spontaneous fission, ternary fission and cluster decay. There is a need to study the different decay modes such as spontaneous fission, ternary fission and cluster decay of super Heavy Nuclei. We studied the spontaneous fission, ternary fission and cluster decay of predicted isotopes of super Heavy Nuclei for Z = 126 and compared with that of alpha decay. This enables to study the competition between spontaneous fission, ternary fission, cluster decay and alpha decay in the super Heavy Nuclei of Z = 126 . The comparison of half lives for different decay modes reveals that alpha decay is having smaller half lives than the other studied decay modes. A detailed study of branching ratio of alpha decay with respect to other decay modes also confirms that alpha decay is most dominant decay mode for the super Heavy Nuclei 318126, 319126, 320126 and 323 ā 326 126 and hence these Nuclei can be detected through the alpha decay mode only.
Hitoshi Nakada - One of the best experts on this subject based on the ideXlab platform.
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level densities of Heavy Nuclei in the shell model monte carlo approach
EPJ Web of Conferences, 2016Co-Authors: Y. Alhassid, Hitoshi Nakada, G F Bertsch, C N Gilbreth, C OzenAbstract:Nuclear level densities are necessary input to the Hauser-Feshbach theory of compound nuclear reactions. However, the microscopic calculation of level densities in the presence of correlations is a challenging many-body problem. The configurationinteraction shell model provides a suitable framework for the inclusion of correlations and shell effects, but the large dimensionality of the many-particle model space has limited its application in Heavy Nuclei. The shell model Monte Carlo method enables calculations in spaces that are many orders of magnitude larger than spaces that can be treated by conventional diagonalization methods and has proven to be a powerful tool in the microscopic calculation of level densities. We discuss recent applications of the method in Heavy Nuclei.
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Shell model Monte Carlo approach: the Heavy Nuclei
Journal of Physics: Conference Series, 2011Co-Authors: Y. Alhassid, L. Fang, Hitoshi NakadaAbstract:The auxiliary-field Monte Carlo (AFMC) method, also known as the shell model Monte Carlo (SMMC), enables us to calculate microscopically statistical and collective properties of Nuclei in the presence of strong correlations. These calculations can be carried out in shell model spaces that are many orders of magnitude larger than spaces that can be treated with conventional diagonalization methods. A recent major development has been the extension of the AFMC approach to Heavy Nuclei. Such applications to Heavy Nuclei have been a major challenge. On the conceptual level, a crucial question is whether a truncated spherical shell model Hamiltonian can describe the proper collectivity observed in Heavy Nuclei and, in particular, the rotational character of strongly deformed Nuclei. On the technical level, the low excitation energies make it necessary to perform calculations down to much lower temperatures. At such low temperatures the propagator becomes ill-conditioned and requires the introduction of stabilization methods.
Kenneth Ruud - One of the best experts on this subject based on the ideXlab platform.
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the absolute shielding constants of Heavy Nuclei resolving the enigma of the 119sn absolute shielding
Journal of Physical Chemistry Letters, 2013Co-Authors: Elena Malkin, Stanislav Komorovsky, Michal Repisky, Taye B Demissie, Kenneth RuudAbstract:We demonstrate that the apparent disagreement between experimental determinations and four-component relativistic calculations of the absolute shielding constants of Heavy Nuclei is due to the breakdown of the commonly assumed relation between the electronic contribution to the nuclear spin-rotation constants and the paramagnetic contribution to the NMR shielding constants. We demonstrate that this breakdown has significant consequences for the absolute shielding constant of 119Sn, leading to errors of about 1000 ppm. As a consequence, we expect that many absolute shielding constants of Heavy Nuclei will be in need of revision.
H C Manjunatha - One of the best experts on this subject based on the ideXlab platform.
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competition between spontaneous fission ternary fission cluster decay and alpha decay in the super Heavy Nuclei of z 126
Nuclear Physics, 2018Co-Authors: H C Manjunatha, N SowmyaAbstract:Abstract Super Heavy Nuclei may decay through the different decay modes such as spontaneous fission, ternary fission and cluster decay. There is a need to study the different decay modes such as spontaneous fission, ternary fission and cluster decay of super Heavy Nuclei. We studied the spontaneous fission, ternary fission and cluster decay of predicted isotopes of super Heavy Nuclei for Z = 126 and compared with that of alpha decay. This enables to study the competition between spontaneous fission, ternary fission, cluster decay and alpha decay in the super Heavy Nuclei of Z = 126 . The comparison of half lives for different decay modes reveals that alpha decay is having smaller half lives than the other studied decay modes. A detailed study of branching ratio of alpha decay with respect to other decay modes also confirms that alpha decay is most dominant decay mode for the super Heavy Nuclei 318126, 319126, 320126 and 323 ā 326 126 and hence these Nuclei can be detected through the alpha decay mode only.