Published July 31, 2009
| Version v1
Journal article
Coherent Contributions to Isospin Mixing in the Mirror Pair 67As and 67Se
Creators
- Orlandi, R.1
- Angelis, G. de1
- Gadea, A.1
- Della Vedova, F.1
- Napoli, D. R.1
- Recchia, F.1
- Sahin, E.1
- Valiente-Dobon, J. J.1
- Bizzeti, P. G.2
- Bizzeti-Sona, A. M.2
- Lunardi, S.3
- Brandolini, F.3
- Farnea, E.3
- Lenzi, S. M.3
- Marginean, N.3
- Mengoni, D.3
- Ur, C. A.3
- Bracco, A.4
- Leoni, S.4
- Carpenter, M. P.5
- and others
- 1. Laboratori Nazionali di Legnaro dell'INFN, Legnaro (Padova), I-35020 (Italy)
- 2. Dipartimento di Fisica, Universita di Firenze and INFN Sezione di Firenze, Sesto Fiorentino (Firenze), I-50019 (Italy)
- 3. INFN Sezione di Padova and Dipartimento di Fisica, Universita di Padova, Padova, I-35131 (Italy)
- 4. INFN Sezione di Milano and Dipartimento di Fisica, Universita di Milano, Milano, I-20133 (Italy)
- 5. Physics Division, Argonne National Laboratory, Argonne, Illinois, 60439 (United States)
Description
Isospin symmetry breaking has been investigated in mass A=67 mirror nuclei through the experimental determination of the E1 strengths of analog electromagnetic transitions. Lifetimes of excited states have been measured in 67Se and 67As with the centroid shift method. Through the comparison of the B(E1) strengths of the mirror 9/2+→7/2- transitions, the isovector and the isoscalar components of the electromagnetic transition amplitude were extracted. The presence of a large isoscalar component provides evidence for coherent contributions to isospin mixing, probably involving the isovector giant monopole resonance.
Additional details
Identifiers
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 103
- Journal Issue
- 5
- Journal Page Range
- p. 052501-052501.4
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 41101063
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Descriptors DEI
- ARSENIC 67; ENERGY-LEVEL TRANSITIONS; EXCITED STATES; ISOSPIN; ISOVECTORS; LIFETIME; MASS; MIRROR NUCLEI; MONOPOLES; RESONANCE; SELENIUM 67; SYMMETRY BREAKING
- Descriptors DEC
- ARSENIC ISOTOPES; BETA DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; ELECTRON CAPTURE RADIOISOTOPES; ENERGY LEVELS; EVEN-ODD NUCLEI; INTERMEDIATE MASS NUCLEI; ISOTOPES; MILLISECONDS LIVING RADIOISOTOPES; NUCLEI; ODD-EVEN NUCLEI; PARTICLE PROPERTIES; RADIOISOTOPES; SECONDS LIVING RADIOISOTOPES; SELENIUM ISOTOPES; TENSORS; VECTORS
Optional Information
- Notes
- (c) 2009 The American Physical Society