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Title: Double Beta Decay of {sup {bold 48}}Ca

Abstract

{sup 48}Ca, the lightest experimentally accessible double beta decay candidate, is the only one simple enough to be treated exactly in the nuclear shell model. Thus the {beta}{beta}{sub 2{nu}} half-life measurement, reported here, provides a unique test of the nuclear physics involved in the {beta}{beta} matrix element calculation. Enriched {sup 48}Ca sources of two different thicknesses have been exposed in a time projection chamber. We observe a half-life of T{sub 1/2}{sup 2{nu}}=(4.3{sub {minus}1.1}{sup +2.4}[stat]{plus_minus}1.4[syst]){times}10{sup 19} yr, consistent with shell model calculations. {copyright} {ital 1996 The American Physical Society.}

Authors:
; ; ; ; ; ; ; ; ;  [1]
  1. Kurchatov Institute, Kurchatov Square, 123182 Moscow (Russia)|[Department of Physics and Astronomy, University of California Irvine, Irvine, California 92697 (United States)|[Physics Department, California Institute of Technology, Pasadena, California 91125 (United States)
Publication Date:
OSTI Identifier:
404762
DOE Contract Number:  
FG03-91ER40679; FG03-88ER40397
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 77; Journal Issue: 26; Other Information: PBD: Dec 1996
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; CALCIUM 48; DOUBLE BETA DECAY; SHELL MODELS; HALF-LIFE; MATRIX ELEMENTS; THICKNESS

Citation Formats

Balysh, A., De Silva, A., Lebedev, V.I., Lou, K., Moe, M.K., Nelson, M.A., Piepke, A., Pronskiy, A., Vient, M.A., and Vogel, P. Double Beta Decay of {sup {bold 48}}Ca. United States: N. p., 1996. Web. doi:10.1103/PhysRevLett.77.5186.
Balysh, A., De Silva, A., Lebedev, V.I., Lou, K., Moe, M.K., Nelson, M.A., Piepke, A., Pronskiy, A., Vient, M.A., & Vogel, P. Double Beta Decay of {sup {bold 48}}Ca. United States. doi:10.1103/PhysRevLett.77.5186.
Balysh, A., De Silva, A., Lebedev, V.I., Lou, K., Moe, M.K., Nelson, M.A., Piepke, A., Pronskiy, A., Vient, M.A., and Vogel, P. Sun . "Double Beta Decay of {sup {bold 48}}Ca". United States. doi:10.1103/PhysRevLett.77.5186.
@article{osti_404762,
title = {Double Beta Decay of {sup {bold 48}}Ca},
author = {Balysh, A. and De Silva, A. and Lebedev, V.I. and Lou, K. and Moe, M.K. and Nelson, M.A. and Piepke, A. and Pronskiy, A. and Vient, M.A. and Vogel, P.},
abstractNote = {{sup 48}Ca, the lightest experimentally accessible double beta decay candidate, is the only one simple enough to be treated exactly in the nuclear shell model. Thus the {beta}{beta}{sub 2{nu}} half-life measurement, reported here, provides a unique test of the nuclear physics involved in the {beta}{beta} matrix element calculation. Enriched {sup 48}Ca sources of two different thicknesses have been exposed in a time projection chamber. We observe a half-life of T{sub 1/2}{sup 2{nu}}=(4.3{sub {minus}1.1}{sup +2.4}[stat]{plus_minus}1.4[syst]){times}10{sup 19} yr, consistent with shell model calculations. {copyright} {ital 1996 The American Physical Society.}},
doi = {10.1103/PhysRevLett.77.5186},
journal = {Physical Review Letters},
number = 26,
volume = 77,
place = {United States},
year = {1996},
month = {12}
}