Microscopic modeling of mass and charge distributions in the spontaneous fission of Pu-240

Sadhukhan Jhilam; Nazarewicz Witold; Schunck Nicolas

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Microscopic modeling of mass and charge distributions in the spontaneous fission of Pu-240

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We propose a methodology to calculate microscopically the mass and charge distributions of spontaneous fission yields. We combine the multidimensional minimization of collective action for fission with stochastic Langevin dynamics to track the relevant fission paths from the ground-state configuration up to scission. The nuclear potential energy and collective inertia governing the tunneling motion are obtained with nuclear density functional theory in the collective space of shape deformations and pairing. We obtain a quantitative agreement with experimental data and find that both the charge and mass distributions in the spontaneous fission of Pu-240 are sensitive both to the dissipation in collective motion and to adiabatic fission characteristics.

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来源
《Physical review, C》 |2016年第1期|共5页
作者
Sadhukhan Jhilam; Nazarewicz Witold; Schunck Nicolas;
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作者单位

Bhabha Atom Res Ctr, Ctr Variable Energy Cyclotron, Phys Grp, 1-AF Bidhan Nagar, Kolkata 700064, W Bengal, India;

Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA;

Lawrence Livermore Natl Lab, Nucl & Chem Sci Div, Livermore, CA 94551 USA;

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正文语种英语
中图分类原子核物理学、高能物理学;
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Microscopic modeling of mass and charge distributions in the spontaneous fission of Pu-240

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