Fission mechanism inferred from nuclear shape fluctuation by the Langevin equation
Fission mechanism inferred from nuclear shape fluctuation by the Langevin equation
复制标题
通过朗之万方程从核形状波动推断裂变机制
DOI:
10.1103/physrevc.105.034604
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发表时间:
2022
影响因子:
3.1
通讯作者:
Ohta M.
中科院分区:
文献类型:
--
作者:
Aritomo Y.;Iwamoto A.;Nishio K.;Ohta M.
One of the dynamical investigations foran understanding of the fission process is the analysis through Langevin trajectories in the nuclear deformation space. The main motivation of this analysis is to elucidate the characteristic nuclear-shape oscillation induced by a random force in the Langevin equation and its impact on the fission process. The characteristic random oscillation originates from the requirement of an overdamped condition. The properties of the friction tensor in the equation reveal that the directional nuclear shape fluctuations originate in the subspace of nuclear deformation. Our calculations exhibit a good agreement with the fission data for fermium isotopes, where the fission-fragment mass distribution changes dramatically from the asymmetric shape to the sharp symmetric shape as the masses of the fissioning Fm isotopes increase.
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影响因子:
64.8
作者:
L. Meitner;O. Frisch
通讯作者:
L. Meitner;O. Frisch
DOI:
10.1016/0029-5582(65)90765-0
发表时间:
1965
期刊:
Nuclear Physics
影响因子:
--
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通讯作者:
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DOI:
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发表时间:
1987
期刊:
Nuclear Physics
影响因子:
--
作者:
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通讯作者:
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DOI:
10.14494/jnrs.9.19
发表时间:
2008
期刊:
Journal of nuclear and radiochemical sciences
影响因子:
--
作者:
T. Ohsawa
通讯作者:
T. Ohsawa
DOI:
--
发表时间:
1995
期刊:
影响因子:
--
作者:
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通讯作者:
M. Lane