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

IF 0.4 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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Abstract

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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重核慢速碰撞中的正电子超临界共振和自发正电子产生
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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来源期刊
Physics of Atomic Nuclei
Physics of Atomic Nuclei 物理-物理:核物理
CiteScore
0.60
自引率
25.00%
发文量
56
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.
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