首次测量$^{92}$Nb中的$9^{-}$异构体的寿命

IF 2.6 3区物理与天体物理 Q2 PHYSICS, NUCLEAR

The European Physical Journal A Pub Date : 2024-11-27 DOI:10.1140/epja/s10050-024-01447-8

N. Goel, S. Nag, B. Maheshwari, D. Choudhury, R. Palit, V. Malik, P. Dey, Md. S. R. Laskar, F. S. Babra, B. Das, A. Kundu, A. Sindhu, Abraham T. Vazhappilly, S. V. Jadhav, B. S. Naidu

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引用次数: 0

摘要

在奇数核素--(^{92}\)铌中发现了一种新的（9^-）异构体，该异构体是在99兆电子伏特的束流能量下通过反应$^{80}$Se($^{18}$O, p5n)$^{92}$铌填充的。使用印度国家伽马阵列（INGA）测量了(\gamma -\gamma \)重合度。重新研究了以前报道过的（11^-\）异构态，测得其半衰期为 103.6(32) ns。新观测到的$^{92}$Nb中的9(^-\)异构体的半衰期首次被测量为35.8(23)ns。异构态的转变概率 $textit{B}(textit{E}$2)已经确定。通过大规模壳模型计算，异构体结构被解释为由三个质子和一个中子组成的四准粒子激发。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

$First lifetime measurement of the $9^{-}$ isomer in $^{92}$Nb$

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First lifetime measurement of the $9^{-}$ isomer in $^{92}$Nb

A new $9^-$ isomer has been identified in odd-odd nuclide, $^{92}$Nb which was populated using the reaction $^{80}$Se($^{18}$O, p5n)$^{92}$Nb at a beam energy of 99 MeV. The $\gamma -\gamma $ coincidences were measured using Indian National Gamma Array (INGA). The previously reported isomeric state at $11^-$ was revisited and the half-life is measured to be 103.6(32) ns. The half-life of the newly observed 9$^- $ isomer in $^{92}$Nb has been measured to be 35.8(23) ns for the first time. The transition probability $\textit{B}(\textit{E}$2) has been determined for the isomeric state. The isomeric structure has been interpreted as a four-quasiparticle excitation, consisting of three protons and one neutron, using large-scale shell model calculations.

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来源期刊

The European Physical Journal A 物理-物理：核物理

CiteScore

5.00

自引率

18.50%

发文量

216

审稿时长

3-8 weeks

期刊介绍： Hadron Physics Hadron Structure Hadron Spectroscopy Hadronic and Electroweak Interactions of Hadrons Nonperturbative Approaches to QCD Phenomenological Approaches to Hadron Physics Nuclear and Quark Matter Heavy-Ion Collisions Phase Diagram of the Strong Interaction Hard Probes Quark-Gluon Plasma and Hadronic Matter Relativistic Transport and Hydrodynamics Compact Stars Nuclear Physics Nuclear Structure and Reactions Few-Body Systems Radioactive Beams Electroweak Interactions Nuclear Astrophysics Article Categories Letters (Open Access) Regular Articles New Tools and Techniques Reviews.

首次测量\(^{92}\)Nb中的\(9^{-}\)异构体的寿命

摘要