Online ISSN: 1884-4111 Print ISSN: 0033-8303
Radioisotopes 73(2): 129-137 (2024)

解説Short Review

48Caの極稀崩壊を探せ!微弱放射線検出のための検出システム高度化Search for Extremely Rare Decays of 48Cal: Advanced Detection Systems for Weak Radiation Detection

筑波大学数理物質系Univ. of Tsukuba

発行日:2024年7月15日Published: July 15, 2024


Neutrinos are fermions that make up the Standard Model of elementary particles. Neutrinos, which have no electric charge, may be Majorana particles capable of converting between particles and antiparticles. In order to prove the Majorana nature of neutrinos, it is necessary to observe an extremely rare phenomenon called neutrino-less double beta decay. We have searched for double beta decays of 48Ca with the CANDLES experiment using a CaF2 scintillator. This paper describes the background physics and the main focus on the high sensitivity of the experimental setup, which the author has played a central role in.

Key words: calcium-48; double beta decay; scintillation detector; measurement of weak radiation; neutrino

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