Nuclear cosmochronometers for supernova neutrino-process

¹ National Institutes for Quantum Science and Technology, Ibaraki 319-1106, Japan
² Institute of Laser Engineering, Osaka University, Osaka 567-0871, Japan
³ Soongsil University, Seoul 156-743, Korea
⁴ Beihang University, Beijing 100083, China
⁵ National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588, Japan
⁶ The University of Tokyo, Tokyo 113-0033, Japan
⁷ Tokyo Institute of Technology, Tokyo 113-0033, Japan
⁸ Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo, Chiba 277-8583, Japan
⁹ Kyushu University, Fukuoka 812-8581, Japan
¹⁰ RIKEN, Saitama 351-0198, Japan
¹¹ Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
¹² University of Notre Dame, Notre Dame, IN 46556, USA

^* e-mail: hayakawa.takehito@qst.go.jp

Published online: 24 February 2022

Abstract

The short-lived unstable isotopes with half-lives of 0.1–10 My have been used as nuclear cosmochronometers to evaluate from an astrophysical event such as supernova (SN) explosion or AGB s-process to the solar system formation. We have proposed shorted-lived radioisotopes of ⁹²Nb and ⁹⁸Tc as the nuclear cosmochronometers for supernova neutrino-process