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首页> 外文期刊>Physics of atomic nuclei >Unified Mechanism behind the Appearance of T-Odd TRI and ROT Asymmetries in Actinide Fission Induced by Cold Polarized Neutrons
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Unified Mechanism behind the Appearance of T-Odd TRI and ROT Asymmetries in Actinide Fission Induced by Cold Polarized Neutrons

机译：<重点型=“斜体”> T - 冷极性中子诱导的滑动裂变中的统一机制

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摘要

Some shortcomings of the approaches that are used to describe T -odd ROT and TRI asymmetries in true ternary fission via reactions involving the emission of prescission alpha particles and which are based on employing the classical method of trajectory calculations are analyzed. These shortcomings are caused by the disregard of the interference between the fission widths of different s J ~( s )neutron resonance states formed in the first well of the deformation potential of fissile compound nuclei. It is shown that the method used in some studies to determine T -odd TRI-asymmetries for prescission alpha particles is at odds with basic concepts of the generalizedmodel of the nucleus and approaches to constructing collective (for example, bending) vibrations of a fissile compound nucleus. Quantum-mechanical fission theory is generalized via employing a unified mechanism of formation of T -odd TRI and ROT asymmetries for prescission alpha particles and evaporated photons (neutrons). The proposed mechanism takes correctly into account the effect of quantum rotation of a fissile compound nucleus on the angular distributions of fission fragments and alpha particles for true ternary fission, as well as on the angular distribution of prompt photons (neutrons) emitted by fragments originating from the delayed fission of the aforementioned nuclei.
机译：通过涉及涉及预留α颗粒的发射的反应，用于描述T-SODD腐烂和TRI不同质的方法的一些缺点。这些缺点是由在裂变化合物核的变形电位的第一孔中形成的不同S J〜（S）中子共振状态的裂变宽度之间的干扰忽略。结果表明，一些研究中使用的方法以确定用于预留α颗粒的T- odd三偶像的T -odd Tri-Yemmetries是具有核的广义典范的基本概念，以及构建裂变化合物的集体（例如，弯曲）振动的方法核。量子 - 机械裂变理论是通过采用T-SODD Tri的统一形成的统一机制和腐烂的α颗粒和蒸发的光子（中子）的机制。所提出的机制考虑了裂变化合物核的量子旋转对真正三元裂变的裂变片段和α颗粒的角度分布的影响，以及由源自碎片发出的促销光子（中子）的角度分布上述核的延迟裂变。

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