Decay of 131La

IF 1.7 4区物理与天体物理 Q2 PHYSICS, NUCLEAR

Nuclear Physics A Pub Date : 2025-05-05 DOI:10.1016/j.nuclphysa.2025.123142

S. Banerjee , S. Bhattacharyya , S. Chakraborty , Soumik Bhattacharya , G. Mukherjee , S.S. Nayak , Snigdha Pal , Suchorita Paul , A. Pal , D. Kumar , R. Banik , S. Panwar , S. Basu , S. Das Gupta , R. Raut , S.S. Ghugre , Pankaj K. Giri , A. Sharma , S. Kundu , C. Majumder , H. Rahaman

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Abstract

The half-life of the ground state of ¹³¹La has been measured using high resolution γ-spectroscopy techniques. The activity was obtained using ¹²⁴Sn foil irradiated by ¹⁴N beam of energy 115 MeV, delivered by the K-130 Cyclotron at the Variable Energy Cyclotron Centre (VECC), Kolkata. The active foil was counted for 5 h using 11 Compton-suppressed Clover HPGe detectors of the Indian National Gamma Array (INGA) facility. A half-life of 60.17(1) min has been obtained from the present measurements. Several γ-transitions, tentatively placed in the level scheme of ¹³¹La from previous works, have been confirmed from the present study. The decay half-lives of the

6^{-}

isomeric state in ¹³²La at 188.2 keV and ground state of ¹³⁰La have also been measured as 24.0(4) min and 8.6(2) min, respectively, from the present data.

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131La的衰变

用高分辨率γ光谱技术测定了131La基态的半衰期。利用加尔各答可变能量回旋加速器中心（VECC）的K-130回旋加速器发射的14N光束辐照124Sn箔，获得了活度。利用印度国家伽玛阵列（INGA）设施的11个康普顿抑制Clover HPGe探测器对活性箔进行5小时计数。从目前的测量得到半衰期为60.17(1)分钟。本研究证实了若干γ-跃迁，这些跃迁暂定在131La的能级方案中。132La在188.2 keV下的6 -异构体态和130La的基态的衰变半衰期分别为24.0(4)min和8.6(2)min。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.