Geochemical evidence of the double β decay of 100 Mo
Abstract
Enrichment of the 100 Ru isotope, resulting from the double beta ( ββ ) decay of 100 Mo , has been found in old molybdenites from Australia. Using Re Os ages determined here together with the amount of excess 100 Ru determined via isotope dilution mass spectrometry, consistent half-lives were obtained from two different molybdenite samples of varying ages (2.90 billion and 1.05 billion years old) with an average half-life of (2.1±0.3)× 1018 years. This half-life is highly consistent with the theoretical model for a two-neutrino ββ decay.
- Publication:
-
Physical Review C
- Pub Date:
- August 2004
- DOI:
- 10.1103/PhysRevC.70.025501
- Bibcode:
- 2004PhRvC..70b5501H
- Keywords:
-
- 23.40.-s;
- 27.60.+j;
- Beta decay;
- double beta decay;
- electron and muon capture;
- 90<
- =A<
- =149