Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Ken-ichiro Arita"'
The origin of the asymmetry in the fragment mass distribution of low-energy nuclear fission is considered from the semiclassical point of view. Using the semiclassical periodic-orbit theory, one can define and quantify the shell effect associated wit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ceb1cb2486f3e0acb71c787892529be
Autor:
Ken-ichiro Arita
Publikováno v:
Physical Review C. 98
Trace formulas for the contributions of degenerate periodic-orbit families to the semiclassical level density in truncated spherical hard-wall potentials are derived. In addition to the portion of the continuous periodic-orbit family contribution whi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c60c5777e670e8aa0ce544668615757d
https://doi.org/10.1103/physrevc.98.064310
https://doi.org/10.1103/physrevc.98.064310
Publikováno v:
Physics of Atomic Nuclei. 79:1067-1123
The periodic-orbit theory based on the improved stationary-phase method within the phase-space path integral approach is presented for the semiclassical description of the nuclear shell structure, concerning the main topics of the fruitful activity o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb98acd3cb3a480bd7f66b7bbf4a84e3
https://doi.org/10.1134/s1063778816060181
https://doi.org/10.1134/s1063778816060181
Making use of the semiclassical periodic orbit theory (POT), we propose, for the first time, a method to exclusively evaluate the shell effects associated with each of the nascent fragments (prefragments) generated by the neck formation in nuclear fi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e285ff4db93185b673c153e60973fee0
Autor:
Ken-ichiro Arita, Alexander G. Magner
Publikováno v:
Physical Review E. 96
The Fedoriuk-Maslov catastrophe theory of caustics and turning points is extended to solve the bifurcation problems by the improved stationary phase method (ISPM). The trace formulas for the radial power-law (RPL) potentials are presented by the ISPM
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f3e7c83cb7d932c4c7b9432a454d738
https://doi.org/10.1103/physreve.96.042206
https://doi.org/10.1103/physreve.96.042206
Autor:
Ken-ichiro Arita
Semiclassical periodic-orbit theory (POT) is applied to the physics of nuclear structures, with the use of a realistic nuclear mean-field model given by the radial power-law potential. Evolution of deformed shell structures, which are responsible for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f8d9b2e9edb4fb319ceadca34d27307b
http://arxiv.org/abs/1603.04316
http://arxiv.org/abs/1603.04316
Publikováno v:
Progress of Theoretical Physics. 115:523-546
The analytical trace formula for a dense cascade of bifurcations was derived using the improved stationary phase method based on extensions of the semiclassical Gutzwiller path integral approach. For the integrable version of the famous Henon-Heiles
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d0dad56fc943a7551188928ec9fe5d4a
https://doi.org/10.1143/ptp.115.523
https://doi.org/10.1143/ptp.115.523
Publikováno v:
IEEJ Transactions on Fundamentals and Materials. 125:953-957
We studied transmutation of high-level wastes in a spherical-tokamak reactor. We examined spent fuel, recovered fuel, natural UO2 fuel and reprocessed waste, though the natural UO2 fuel is not a high-level waste. We added a few percent of 239Pu to th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dedc3235a2405e300aef2db98bf074c8
https://doi.org/10.1541/ieejfms.125.953
https://doi.org/10.1541/ieejfms.125.953
Autor:
Ken-ichiro Arita
Publikováno v:
International Journal of Modern Physics E. 13:191-202
Shell structures in nuclear mean field potentials are analyzed using semiclassical periodic-orbit theory. rα-type potential model is taken as an approximation of Woods-Saxon model, and spin-orbit coupling is also taken into account. Using this model
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f99d6b44329a9869e0b9a01fc391fcf3
https://doi.org/10.1142/s0218301304001941
https://doi.org/10.1142/s0218301304001941
Autor:
Ken-ichiro Arita
Publikováno v:
Physica Scripta. 92:074005
The semiclassical origins of the enhancement of shell effects in exotic-shape mean-field potentials are investigated by focusing attention on the roles of the local symmetries associated with the periodic-orbit bifurcations. The deformed shell struct
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ea4915c95467e8f834b79bac91a360fd
https://doi.org/10.1088/1402-4896/aa71cd
https://doi.org/10.1088/1402-4896/aa71cd