ISSN:
1572-9486
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract 48Ca, the lightest double beta decay candidate, has been until now the only one simple enough to be treated exactly in the nuclear shell model. Thus, the ββ(2ν) half-life measurement, reported here, provides a unique test of the nuclear physics involved in the ββ matrix element calculation. Enriched 48Ca sources of two different thicknesses have been exposed in a time projection chamber, and yield T 2ν 1/2=(4.3+2.4 -1.1[stat.]±1.4[syst.])×1019 years, compatible with the shell model calculations. The consequences of this result for the shell model calculation of the ββ(2ν) rate are briefly discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1021203622422
Permalink