Induced Fission of 240Pu within a Real-Time Microscopic Framework

被引：205

作者：

Bulgac, Aurel ^{[1
]}

Magierski, Piotr ^{[1
,2
]}

Roche, Kenneth J. ^{[1
,3
]}

Stetcu, Ionel ^{[4
]}

机构：

[1] Univ Washington, Dept Phys, Seattle, WA 98195 USA

[2] Warsaw Univ Technol, Fac Phys, Ulica Koszykowa 75, PL-00662 Warsaw, Poland

[3] Pacific NW Natl Lab, Richland, WA 99352 USA

[4] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA

来源：

PHYSICAL REVIEW LETTERS | 2016年 / 116卷 / 12期

关键词：

DENSITY-FUNCTIONAL THEORY; ONE-BODY DISSIPATION; DYNAMICS; DISINTEGRATION; LIBRARY; URANIUM; NUCLEI;

D O I：

10.1103/PhysRevLett.116.122504

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We describe the fissioning dynamics of Pu-240 from a configuration in the proximity of the outer fission barrier to full scission and the formation of the fragments within an implementation of density functional theory extended to superfluid systems and real-time dynamics. The fission fragments emerge with properties similar to those determined experimentally, while the fission dynamics appears to be quite complex, with many excited shape and pairing modes. The evolution is found to be much slower than previously expected, and the ultimate role of the collective inertia is found to be negligible in this fully nonadiabatic treatment of nuclear dynamics, where all collective degrees of freedom (CDOF) are included (unlike adiabatic treatments with a small number of CDOF).

引用

页数：7

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[1] SUPERCONDUCTIVITY Higgs, Anderson and all that [J].