Fragment Intrinsic Spins and Fragments' Relative Orbital Angular Momentum in Nuclear Fission

被引：41

作者：

Bulgac, Aurel ^{[1
]}

Abdurrahman, Ibrahim ^{[1
]}

Godbey, Kyle ^{[2
]}

Stetcu, Ionel ^{[3
]}

机构：

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

[2] Michigan State Univ, Facil Rare Isotope Beams, E Lansing, MI 48824 USA

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

来源：

PHYSICAL REVIEW LETTERS | 2022年 / 128卷 / 02期

关键词：

URANIUM;

D O I：

10.1103/PhysRevLett.128.022501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present the first fully unrestricted microscopic calculations of the primary fission fragment intrinsic spins and of the fission fragments' relative orbital angular momentum for U-236* , Pu-24(0)*, and Cf-252 using the time-dependent density functional theory framework. Within this microscopic approach, free of restrictions and unchecked assumptions and which incorporates the relevant physical observables for describing fission, we evaluate the triple distribution of the fission fragment intrinsic spins and of their fission fragments' relative orbital angular momentum and show that their dynamics is dominated by their bending collective modes in contradistinction to the predictions of the existing phenomenological models and some interpretations of experimental data.

引用

页数：6

共 39 条

[1] TOWARDS A BETTER PARAMETRIZATION OF SKYRME-LIKE EFFECTIVE FORCES - A CRITICAL-STUDY OF THE SKM FORCE [J].