Two-neutrino double beta decay of [sup 48]Ca
Journal Article
·
· Physical Review, C (Nuclear Physics); (United States)
- Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan (Taiwan, Province of China)
We have performed quasiparticle random phase approximation (QRPA) calculations for the 2[nu][beta][beta] decay matrix element [ital M][sub GT][sup 2[nu]] of [sup 48]Ca using realistic effective interactions derived from the Paris, Bonn, and Reid potentials. Unlike earlier QRPA calculations where the BCS self-energies were suppressed, we have retained these self-energies together with the use of the single-particle levels provided by a [sup 40]Ca core. Different choices for the single-particle levels are employed, and their effects on [ital M][sub GT][sup 2[nu]] are compared. A majority of our calculated [ital M][sub GT][sup 2[nu]] matrix elements are in good agreement with the experimental bounds of [vert bar][ital M][sub GT][vert bar][sup 2[nu]][lt]0.05 MeV[sup [minus]1], and exhibit good stability with respect to the variation of the particle-particle interaction strength [ital g][sub [ital p][ital p]].
- DOE Contract Number:
- FG02-88ER40388
- OSTI ID:
- 5092887
- Journal Information:
- Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 49:4; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
663210* -- Ground-State Radioactivity-- (1992-)
663540 -- Nuclear Mass Ranges-- A=39-58-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALINE EARTH ISOTOPES
BCS THEORY
BETA DECAY
BETA-MINUS DECAY
CALCIUM 48
CALCIUM ISOTOPES
DECAY
DOUBLE BETA DECAY
ENERGY
EVEN-EVEN NUCLEI
GAMOW-TELLER RULES
INTERMEDIATE MASS NUCLEI
ISOTOPES
MATRIX ELEMENTS
NUCLEAR DECAY
NUCLEI
OSCILLATION MODES
POTENTIALS
RANDOM PHASE APPROXIMATION
SELF-ENERGY
SINGLE-PARTICLE MODES
STABLE ISOTOPES
663540 -- Nuclear Mass Ranges-- A=39-58-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALINE EARTH ISOTOPES
BCS THEORY
BETA DECAY
BETA-MINUS DECAY
CALCIUM 48
CALCIUM ISOTOPES
DECAY
DOUBLE BETA DECAY
ENERGY
EVEN-EVEN NUCLEI
GAMOW-TELLER RULES
INTERMEDIATE MASS NUCLEI
ISOTOPES
MATRIX ELEMENTS
NUCLEAR DECAY
NUCLEI
OSCILLATION MODES
POTENTIALS
RANDOM PHASE APPROXIMATION
SELF-ENERGY
SINGLE-PARTICLE MODES
STABLE ISOTOPES