Re-analysis of temperature dependent neutron capture rates and stellar β-decay rates of 95-98Mo

IF 3.6 2区物理与天体物理 Q1 PHYSICS, NUCLEAR

中国物理C Pub Date : 2024-08-31 DOI:10.1088/1674-1137/ad5428

Abdul Kabir, Jameel-Un Nabi, Muhammad Tahir, Abdul Muneem and Zain Ul Abideen

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引用次数: 0

Abstract

The neutron capture rates and temperature dependent stellar beta decay rates of Mo isotopes are investigated within the framework of the statistical code TALYS v1.96 and the proton neutron quasi particle random phase approximation (pn-QRPA) model. The Maxwellian average cross-section (MACS) and neutron capture rates for the Mo(n,γ) Mo radiative capture process are analyzed within the framework of the statistical code TALYS v1.96 based on the phenomenological nuclear level density model and gamma strength functions. The present model-based computations for the MACS are comparable to the existing measured data. The sensitivity of stellar weak interaction rates to various densities and temperatures is investigated within the framework of the pn-QRPA model. Particular attention is paid to the impact of thermally filled excited states in the decaying nuclei ( Mo) on electron emission and positron capture rates. Furthermore, we compare the neutron capture rates and stellar beta decay rates. It is found that neutron capture rates are higher than stellar beta decay rates at both lower and higher temperatures.

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重新分析与温度有关的 95-98Mo 中子俘获率和恒星 β 衰变率

在统计代码TALYS v1.96和质子中子准粒子随机相近似（pn-QRPA）模型的框架内，研究了钼同位素的中子俘获率和与温度相关的恒星β衰变率。基于现象学核级密度模型和伽马强度函数，在统计代码 TALYS v1.96 的框架内分析了 Mo(n,γ) Mo 辐射捕获过程的 Maxwellian 平均截面（MACS）和中子捕获率。目前基于模型的 MACS 计算结果与现有的测量数据具有可比性。在 pn-QRPA 模型框架内研究了恒星弱相互作用率对各种密度和温度的敏感性。我们特别关注了衰变核（钼）中热填充激发态对电子发射和正电子俘获率的影响。此外，我们还比较了中子俘获率和恒星β衰变率。结果发现，在较低和较高温度下，中子俘获率都高于恒星β衰变率。

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来源期刊

中国物理C 物理-物理：核物理

CiteScore

6.50

自引率

8.30%

发文量

8976

审稿时长

1.3 months

期刊介绍： Chinese Physics C covers the latest developments and achievements in the theory, experiment and applications of: Particle physics; Nuclear physics; Particle and nuclear astrophysics; Cosmology; Accelerator physics. The journal publishes original research papers, letters and reviews. The Letters section covers short reports on the latest important scientific results, published as quickly as possible. Such breakthrough research articles are a high priority for publication. The Editorial Board is composed of about fifty distinguished physicists, who are responsible for the review of submitted papers and who ensure the scientific quality of the journal. The journal has been awarded the Chinese Academy of Sciences ‘Excellent Journal’ award multiple times, and is recognized as one of China''s top one hundred key scientific periodicals by the General Administration of News and Publications.