Low-lying excited states in 62Ge investigated by multinucleon knock-out reaction

IF 4.3 3区材料科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

ACS Applied Electronic Materials Pub Date : 2024-09-04 DOI:10.1088/1361-6471/ad6fbd

Z Elekes, V Panin, T R Rodríguez, K Sieja, D S Ahn, A Al-Adili, H Baba, A I Stefanescu, K J Cook, Cs Dósa, N Fukuda, J Gao, J Gibelin, K I Hahn, Z Halász, S W Huang, T Isobe, M M Juhász, D Kim, T Kobayashi, Y Kondo, Z Korkulu, A Kurihara, I Kuti, H Miki, K Miki, T Motobayashi, H Otsu, A Saastamoinen, M Sasano, H Sato, N H Shadhin, T Shimada, Y Shimizu, I C Stefanescu, L Stuhl, H Suzuki, H Takeda, Y Togano, T Tomai, L Trache, D Tudor, T Uesaka, Y Utsuki, H Wang, A Yasuda, K Yoneda, Y Yoshitome

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Abstract

The low-energy states of the proton-rich nucleus ⁶²Ge were studied by the multinucleon knock-out reaction ⁶⁷Se(¹²C,X)⁶²Ge using a ¹²C target. The analysis of the Doppler-corrected singles spectrum of the γ rays showed two transitions at 744(20) keV and 948(17) keV, which were found to be in coincidence with each other, forming a cascade and establishing two states at 948(17) keV and 1692(26) keV. The 744 keV transition was detected for the first time, and based on a comparison of the experimental data to shell-model and symmetry-conserving-configuration-mixing-model calculations, it connects the second and first 2⁺ levels. The beyond-mean-field model suggests that these states belong to two different bands with triaxial features and similar deformation.

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通过多核子敲除反应研究 62Ge 中的低洼激发态

利用 12C 靶件，通过多核敲除反应 67Se(12C,X)62Ge 研究了富质子核 62Ge 的低能态。对 γ 射线的多普勒校正单谱分析表明，在 744(20) keV 和 948(17) keV 有两个跃迁，这两个跃迁相互重合，形成级联，并在 948(17) keV 和 1692(26) keV 建立了两个态。根据实验数据与壳模型和对称守恒配置混合模型计算结果的比较，首次探测到了 744 keV 的转变，它连接了第二和第一个 2+ 水平。超越均场模型表明，这些态属于两个不同的带，具有三轴特征和相似的变形。

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来源期刊

ACS Applied Electronic Materials Multiple-

CiteScore

7.20

自引率

4.30%

发文量

567