Published September 2, 2011
| Version v1
Journal article
Direct Observation of Two Protons in the Decay of 54Zn
Creators
- Ascher, P.1
- Audirac, L.1
- Blank, B.1
- Delalee, F.1
- Demonchy, C. E.1
- Giovinazzo, J.1
- Grevy, S.1
- Kurtukian-Nieto, T.1
- Leblanc, S.1
- Pedroza, J.-L.1
- Pibernat, J.1
- Serani, L.1
- Adimi, N.2, 1
- Borcea, C.3
- Companis, I.3
- Brown, B. A.4
- Oliveira Santos, F. de5
- Perrot, L.5
- Thomas, J.-C.5
- Grigorenko, L. V.6
- and others
- 1. Centre d'Etudes Nucleaires de Bordeaux Gradignan--Universite Bordeaux 1--UMR 5797 CNRS/IN2P3, Chemin du Solarium, BP 120, 33175 Gradignan (France)
- 2. Faculte de Physique, USTHB, B.P.32, El Alia, 16111 Bab Ezzouar, Alger (Algeria)
- 3. National Institute for Physics and Nuclear Engineering, P.O. Box MG6, Bucharest-Margurele (Romania)
- 4. Department of Physics and Astronomy, and National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824-1321 (United States)
- 5. Grand Accelerateur National d'Ions Lourds, CEA/DSM-CNRS/IN2P3, 14076 Caen Cedex 05 (France)
- 6. Flerov Laboratory of Nuclear Reactions, JINR, Dubna 141980 (Russian Federation)
Description
The two protons emitted in the decay of 54Zn have been individually observed for the first time in a time projection chamber. The total decay energy and the half-life measured in this work agree with the results obtained in a previous experiment. Angular and energy correlations between the two protons are determined and compared to theoretical distributions of a three-body model. Within the shell model framework, the relative decay probabilities show a strong contribution of the p2 configuration for the two-proton emission. After 45Fe, the present result on 54Zn constitutes only the second case of a direct observation of the ground state two-proton decay of a long-lived isotope.
Additional details
Identifiers
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 107
- Journal Issue
- 10
- Journal Page Range
- p. 102502-102502.5
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 43090224
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Descriptors DEI
- GROUND STATES; HALF-LIFE; IRON 45; PROBABILITY; PROTON-EMISSION DECAY; PROTONS; SHELL MODELS; THREE-BODY PROBLEM; TIME PROJECTION CHAMBERS; ZINC 54
- Descriptors DEC
- BARYONS; BETA DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; DECAY; DRIFT CHAMBERS; ELECTRON CAPTURE RADIOISOTOPES; ELEMENTARY PARTICLES; ENERGY LEVELS; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; FERMIONS; HADRONS; INTERMEDIATE MASS NUCLEI; IRON ISOTOPES; ISOTOPES; MANY-BODY PROBLEM; MATHEMATICAL MODELS; MEASURING INSTRUMENTS; MILLISECONDS LIVING RADIOISOTOPES; MULTIWIRE PROPORTIONAL CHAMBERS; NUCLEAR DECAY; NUCLEAR MODELS; NUCLEI; NUCLEONS; PROPORTIONAL COUNTERS; PROTON DECAY RADIOISOTOPES; RADIATION DETECTORS; RADIOISOTOPES; ZINC ISOTOPES
Optional Information
- Notes
- (c) 2011 American Institute of Physics