Development of a β-TOF detector: An enhancement of the α-TOF detector for use with β-decaying nuclides

Author:

Niwase Toshitaka1ORCID,Xian Wenduo12ORCID,Wada Michiharu1ORCID,Rosenbusch Marco1ORCID,Chen Sidong12,Takamine Aiko3ORCID,Liu Jiajian12ORCID,Iimura Shun134ORCID,Hou Dongsheng567,Yan Shuxiong8,Ishiyama Hironobu3,Miyatake Hiroari1ORCID,Nishimura Shunji3ORCID,Kaji Daiya3,Morimoto Kouji3,Hirayama Yoshikazu1ORCID,Watanabe Yutaka X1ORCID,Kimura Sota3,Schury Peter1ORCID,Wollnik Hermann9

Affiliation:

1. Wako Nuclear Science Center, Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK) , Wako, Saitama 351-0198 , Japan

2. Department of Physics, The University of Hong Kong , Pokfulam 999077 , Hong Kong

3. RIKEN Nishina Center for Accelerator-Based Science , Wako, Saitama 351-0198 , Japan

4. Department of Physics, Osaka University , Osaka 565-0871 , Japan

5. Institute of Modern Physics, Chinese Academy of Science , Lanzhou 730000 , China

6. School of Nuclear Science and Technology, University of Chinese Academy of Sciences , Beijing 100049 , China

7. School of Nuclear Science and Technology, Lanzhou University , Lanzhou 730000 , China

8. Institute of Mass Spectrometer and Atmospheric Environment, Jinan University , Guangzhou 510632 , China

9. New Mexico State University , Las Cruces, NM 88001 , USA

Abstract

AbstractPreviously, we developed an α-TOF detector for correlated measurements of atomic masses and decay properties of radioactive isotopes using a multi-reflection time-of-flight mass spectrograph, and successfully demonstrated α-decay-correlated mass measurements of heavy and superheavy nuclides. In this work, we develop a β-TOF detector, an improvement upon the α-TOF detector, to extend this technology to β-decaying nuclides. Online commissioning with 81Ga yielded a measured half-life of 1.44(31) s, in agreement with the previous literature, and confirmed the efficiency of detecting a decay-correlated event to be consistent with the solid angle limitation.

Funder

University of Tokyo

Japan Society for the Promotion of Science

Publisher

Oxford University Press (OUP)

Subject

General Physics and Astronomy

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