重核慢速碰撞中的正电子超临界共振和自发正电子产生

IF 0.3 4区物理与天体物理 Q4 PHYSICS, NUCLEAR Physics of Atomic Nuclei Pub Date : 2024-07-06 DOI:10.1134/S1063778824700261

D. A. Telnov, N. K. Dulaev, Y. S. Kozhedub, I. A. Maltsev, R. V. Popov, I. I. Tupitsyn, V. M. Shabaev

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引用次数: 0

摘要

摘要我们对由两个高电荷裸核组成的系统中的正电子超临界共振进行了理论和计算研究。在修正的正球面坐标中，借助复杂尺度广义伪谱法计算了共振位置和宽度与核间分离的关系。计算结果被用于估算慢速 U\({}^{92+}\)-U\({}^{92+}\) 和 Cm\({}^{96+}\)-Cm\({}^{96+}\) 碰撞中自发正电子产生的概率。

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Positron Supercritical Resonances and Spontaneous Positron Creation in Slow Collisions of Heavy Nuclei

We present a theoretical and computational study of positron supercritical resonances in systems consisting of two highly-charged bare nuclei. The resonance positions and widths depending on the internuclear separation are calculated with the help of the complex-scaling generalized pseudospectral method in modified prolate spheroidal coordinates. The results are applied to estimate the probability of spontaneous positron creation in slow U\({}^{92+}\)–U\({}^{92+}\) and Cm\({}^{96+}\)–Cm\({}^{96+}\) collisions.

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来源期刊

Physics of Atomic Nuclei 物理-物理：核物理

CiteScore

0.60

自引率

25.00%

发文量

审稿时长

3-6 weeks

期刊介绍： Physics of Atomic Nuclei is a journal that covers experimental and theoretical studies of nuclear physics: nuclear structure, spectra, and properties; radiation, fission, and nuclear reactions induced by photons, leptons, hadrons, and nuclei; fundamental interactions and symmetries; hadrons (with light, strange, charm, and bottom quarks); particle collisions at high and superhigh energies; gauge and unified quantum field theories, quark models, supersymmetry and supergravity, astrophysics and cosmology.