Published October 11, 2007
| Version v1
Journal article
Lifetime of the isomeric 02+ state in 12Be
Creators
- 1. Center for Nuclear Study, University of Tokyo, Saitama 351-0198 (Japan)
- 2. Department of Physics, Rikkyo University, Tokyo 171-8501 (Japan)
- 3. Institute for Physical and Chemical Research (RIKEN), Saitama 351-0198 (Japan)
- 4. Institute of Nuclear Research, Hungarian Academy of Science, H-4001 Debrecen (Hungary)
- 5. Department of Physics, Osaka University, Osaka 560-0043 (Japan)
- 6. Department of Physics, Tohoku University, Miyagi 980-8578 (Japan)
- 7. Department of Physics, University of Tokyo, Tokyo 113-0033 (Japan)
- 8. NSCL, Michigan State University, East Lansing, MI 48824 (United States)
Description
Mean lifetime τ of the isomeric 02+ state in 12Be has been determined by measuring decay spectra of delayed γ-rays from stopped 12Be nuclei produced by the projectile fragmentation of 18O at 100 A MeV. A consistent value of τ=331±12 ns was obtained from the time spectra of the E2 γ decay to the 21+ state and the positron annihilation following the E0 decay to the ground state. Based on the observed branching ratio between the E2 and E0 decays, transition strengths of the two decay modes were deduced to be B(E2;02+→21+)=7.0±0.6 e2fm4 and |<02+|Σieiri2|01+>|=0.87±0.03 efm2, respectively
Availability note (English)
Available from http://dx.doi.org/10.1016/j.physletb.2007.08.053Additional details
Identifiers
- DOI
- 10.1016/j.physletb.2007.08.053;
- PII
- S0370-2693(07)01013-1;
Publishing Information
- Journal Title
- Physics Letters. Section B
- Journal Volume
- 654
- Journal Issue
- 3-4
- Journal Page Range
- p. 87-91
- ISSN
- 0370-2693
- CODEN
- PYLBAJ
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39051886
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Descriptors DEI
- ANNIHILATION; BERYLLIUM 12; BRANCHING RATIO; E0-TRANSITIONS; E2-TRANSITIONS; GAMMA DECAY; GAMMA RADIATION; GROUND STATES; LIFETIME; MEV RANGE 10-100; OXYGEN 18; POSITRONS
- Descriptors DEC
- ALKALINE EARTH ISOTOPES; ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; BERYLLIUM ISOTOPES; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; DECAY; DIMENSIONLESS NUMBERS; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; ENERGY LEVELS; ENERGY RANGE; ENERGY-LEVEL TRANSITIONS; EVEN-EVEN NUCLEI; FERMIONS; INTERACTIONS; IONIZING RADIATIONS; ISOTOPES; LEPTONS; LIGHT NUCLEI; MATTER; MEV RANGE; MILLISECONDS LIVING RADIOISOTOPES; MULTIPOLE TRANSITIONS; NUCLEAR DECAY; NUCLEI; OXYGEN ISOTOPES; PARTICLE INTERACTIONS; RADIATIONS; RADIOISOTOPES; STABLE ISOTOPES
Optional Information
- Copyright
- Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.