Measurement of 144Sm(p,γ) cross-section at Gamow energies

IF 3.4 3区物理与天体物理 Q2 PHYSICS, NUCLEAR Journal of Physics G: Nuclear and Particle Physics Pub Date : 2024-06-10 DOI:10.1088/1361-6471/ad4d06

Tanmoy Bar, Dipali Basak, Lalit Kumar Sahoo, Sukhendu Saha, Jagannath Datta, Sandipan Dasgupta, Chinmay Basu

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Abstract

The cross-section measurement of ¹⁴⁴Sm(p, γ)¹⁴⁵Eu (T_1/2 = 5.93(4) days) reaction has been performed at proton energies around 2.6–6.8 MeV using the activation technique. Molecular deposition technique was used to prepare the ¹⁴⁴Sm targets having thickness between 100 and 350 μg cm⁻² on Al backing. The astrophysical S-factor of this reaction has been measured for the first time at

Epcm=

2.57 ± 0.13 MeV, S-factor = 2.542 ± 1.152(×10¹⁰) MeV-b. Cross-section data were compared with the previously measured experimental data (2.8–7.5 MeV) from literature and the theoretical predictions obtained using Hauser-Feshbach statistical model. Obtained results were utilised to predict the reaction rates for ¹⁴⁴Sm (p, γ) and ¹⁴⁵Eu (γ, p) reactions.

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测量伽莫夫能量下的 144Sm（p,γ）截面

在质子能量约为 2.6-6.8 MeV 时，利用活化技术对 144Sm(p,γ)145Eu（T1/2 = 5.93(4) 天）反应进行了截面测量。使用分子沉积技术制备了 144Sm 靶件，其在铝衬底上的厚度介于 100 和 350 μg cm-2 之间。首次测量了该反应的天体物理 S 因子 Epcm= 2.57 ± 0.13 MeV，S 因子 = 2.542 ± 1.152(×1010) MeV-b。横截面数据与之前从文献中测得的实验数据（2.8-7.5 MeV）以及使用豪瑟-费斯巴赫统计模型得出的理论预测进行了比较。获得的结果被用来预测 144Sm (p, γ) 和 145Eu (γ, p) 反应的反应速率。

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来源期刊

Journal of Physics G: Nuclear and Particle Physics 物理-物理：核物理

CiteScore

7.60

自引率

5.70%

发文量

105

审稿时长

1 months

期刊介绍： Journal of Physics G: Nuclear and Particle Physics (JPhysG) publishes articles on theoretical and experimental topics in all areas of nuclear and particle physics, including nuclear and particle astrophysics. The journal welcomes submissions from any interface area between these fields. All aspects of fundamental nuclear physics research, including: nuclear forces and few-body systems; nuclear structure and nuclear reactions; rare decays and fundamental symmetries; hadronic physics, lattice QCD; heavy-ion physics; hot and dense matter, QCD phase diagram. All aspects of elementary particle physics research, including: high-energy particle physics; neutrino physics; phenomenology and theory; beyond standard model physics; electroweak interactions; fundamental symmetries. All aspects of nuclear and particle astrophysics including: nuclear physics of stars and stellar explosions; nucleosynthesis; nuclear equation of state; astrophysical neutrino physics; cosmic rays; dark matter. JPhysG publishes a variety of article types for the community. As well as high-quality research papers, this includes our prestigious topical review series, focus issues, and the rapid publication of letters.