Investigating the structure of 11B using particle-γ coincidences

IF 1.7 4区物理与天体物理 Q2 PHYSICS, NUCLEAR

Nuclear Physics A Pub Date : 2025-05-09 DOI:10.1016/j.nuclphysa.2025.123138

S. Bottoni , G. Corbari , S. Leoni , B. Fornal , A. Goasduff , S. Capra , D. Mengoni , E. Albanese , S. Ziliani , G. Benzoni , A.M. Sánchez-Benítez , A. Bracco , D. Brugnara , F. Camera , M. Ciemała , N. Cieplicka-Oryńczak , F.C.L. Crespi , J.A. Dueñas , A. Gadea , F. Galtarossa , G. Zhang

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引用次数: 0

Abstract

The structure of ¹¹B was investigated at Legnaro National Laboratories of INFN using the ⁶Li(⁶Li,pγ) fusion-evaporation reaction. Emitted protons feeding excited states of ¹¹B were detected by the GALTRACE silicon telescopes in coincidence with γ rays measured by the GALILEO HPGe array. The level and γ-decay scheme of ¹¹B was reconstructed on an even-by-event basis by combining particle and γ-ray spectroscopy techniques. In particular, the γ decay from the possible near-threshold proton resonance was searched for, providing first results on its γ-ray branch with a 5σ and 3σ confidence level. Results are discussed along with predictions of the Shell Model Embedded in the Continuum (SMEC).

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利用粒子-γ巧合研究11B的结构

利用6Li（6Li,pγ）的熔融蒸发反应，研究了11B的结构。发射的质子进入11B的激发态被GALTRACE硅望远镜探测到，与伽利略HPGe阵列测量到的γ射线一致。结合粒子能谱和γ射线能谱技术，在单事件基础上重建了11B的能级和γ衰变模式。特别是，从可能的近阈值质子共振中寻找γ衰变，在其γ射线分支上提供了第一个具有5σ和3σ置信水平的结果。对结果进行了讨论，并对连续统内嵌壳模型（SMEC）进行了预测。

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来源期刊

Nuclear Physics A 物理-物理：核物理

CiteScore

3.60

自引率

7.10%

发文量

113

审稿时长

61 days

期刊介绍： Nuclear Physics A focuses on the domain of nuclear and hadronic physics and includes the following subsections: Nuclear Structure and Dynamics; Intermediate and High Energy Heavy Ion Physics; Hadronic Physics; Electromagnetic and Weak Interactions; Nuclear Astrophysics. The emphasis is on original research papers. A number of carefully selected and reviewed conference proceedings are published as an integral part of the journal.