A Measurement of the double beta decay half-life of 48Ca
Abstract
48Ca is the lightest of the many double beta decay nuclei, and the only one simple enough to be treated exactly in the shell model without truncation. Thus a ββ2 v measurement of this isotope provides a unique test of the nuclear physics involved in ββ matrix element calculations. Enriched 48Ca sources of two different thicknesses have been exposed in a time projection chamber, and yield a preliminary T 1/22 v = (5.5 -1.5+3.5) × 10 19 y, in agreement with shell model calculations.
- Publication:
-
Nuclear Physics B Proceedings Supplements
- Pub Date:
- May 1996
- DOI:
- 10.1016/0920-5632(96)00242-3
- Bibcode:
- 1996NuPhS..48..213B