测量 Ru94 和 Tc93 的寿命以研究 N=50 同位素的资历守恒性

IF 3.1 2区 物理与天体物理 Q1 Physics and Astronomy Physical Review C Pub Date : 2024-09-18 DOI:10.1103/physrevc.110.034320
M. Ley, J. Jolie, L. Knafla, A. Blazhev, A. Esmaylzadeh, C. Fransen, A. Pfeil, J.-M. Régis, P. Van Isacker
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引用次数: 0

摘要

在科隆FN串联加速器上,利用Zr90(Li6,3n)Tc93和Mo92(α,2n)Ru94两个聚变蒸发反应填充了Tc93和Ru94中的低洼激发态,并利用高纯锗和快速掺铈溴化镧探测器的混合装置测量了它们的寿命,以实现γ-γ快速定时。测得的寿命填补了沿 N=50 等渗链的电磁转变概率 B(σλ) 实验数据的空白,并为 Ru94 中 41+ 态的寿命等模糊情况提供了更多见解。实验数据与来自单 j 近似的理论 B(E2)值、来自 Mo92 的与状态相关的有效电荷以及在 π(1p1/2,0g9/2) 模型空间中使用 SR88MHJM 相互作用进行的壳模型计算结果进行了比较。
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Lifetime measurement in Ru94 and Tc93 to investigate seniority conservation in the N=50 isotones
Low-lying excited states in Tc93 and Ru94 were populated using the two fusion-evaporation reactions Zr90(Li6,3n)Tc93 and Mo92(α,2n)Ru94 at the Cologne FN Tandem accelerator and their lifetimes were measured using a hybrid setup of high-purity germanium and fast cerium doped lanthanum bromide detectors for γγ fast-timing. The measured lifetimes fill gaps in the experimental data for electromagnetic transition probabilities B(σλ) along the N=50 isotonic chain and provide more insight for ambiguous cases, such as the lifetime of the 41+ state in Ru94. The experimental data are compared with theoretical B(E2) values from a single-j approximation, with state-dependent effective charges derived from Mo92 and with the results from shell-model calculations performed using the SR88MHJM interaction in the π(1p1/2,0g9/2) model space.
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来源期刊
Physical Review C
Physical Review C 物理-物理:核物理
CiteScore
5.70
自引率
35.50%
发文量
0
审稿时长
1-2 weeks
期刊介绍: Physical Review C (PRC) is a leading journal in theoretical and experimental nuclear physics, publishing more than two-thirds of the research literature in the field. PRC covers experimental and theoretical results in all aspects of nuclear physics, including: Nucleon-nucleon interaction, few-body systems Nuclear structure Nuclear reactions Relativistic nuclear collisions Hadronic physics and QCD Electroweak interaction, symmetries Nuclear astrophysics
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