The IBA study and the effective boson calculation for Er isotopes
Creators
- 1. National Chiao Tung Univ., Hsinchu (Taiwan). Dept. of Electrophysics
- 2. National Tsing Hua Univ., Hsinchu (Taiwan). Dept. of Physics
Description
The structure of even-even Er isotopes with neutron number 86 ≤ N ≤ 96 are studied within the framework of the IBA model. We first perform a traditional IBA calculation by taking Z = 64 and N = 82 as a closed shell. The agreements between the calculated and the observed energy levels are not good even when a g-boson is included in the calculation. This means that Z = 64 and N = 82 is not a good closed shell. In order to take into account the partially closed effects near Z = 64, a smooth variation of the effective boson numbers are assumed. The energy levels and B(E2) values of the above nuclei are calculated. It is found that the agreements between the theoretical and observed data are much better in the model of the effective boson consideration. (orig.)
Additional details
Publishing Information
- Journal Title
- Nucl. Phys., A
- Journal Volume
- 482
- Journal Issue
- 3/4
- Series
- Nucl. Phys., A.
- Journal Page Range
- 679-691
- ISSN
- 0375-9474
- CODEN
- NUPAB
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Netherlands
- INIS RN
- 19086646
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- ERBIUM ISOTOPES; ERBIUM 154; ERBIUM 156; ERBIUM 158; ERBIUM 160; ERBIUM 162; ERBIUM 164; E2-TRANSITIONS; HAMILTONIANS; HIGH SPIN STATES; INTERACTING BOSON MODEL; NUCLEAR STRUCTURE; ROTATIONAL STATES; STRENGTH FUNCTIONS; THEORETICAL DATA
- Descriptors DEC
- ALPHA DECAY RADIOISOTOPES; BETA DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; DATA; DAYS LIVING RADIOISOTOPES; ELECTRON CAPTURE RADIOISOTOPES; ENERGY LEVELS; ENERGY-LEVEL TRANSITIONS; EVEN-EVEN NUCLEI; EXCITED STATES; FUNCTIONS; HOURS LIVING RADIOISOTOPES; INFORMATION; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTO; ISOTOPES; MATHEMATICAL MODELS; MATHEMATICAL OPERATORS; MINUTES LIVING RADIOISOTOPES; MULTIPOLE TRANSITIONS; NUCLEAR MODELS; NUCLEI; NUMERICAL DATA; QUANTUM OPERATORS; RADIOISOTOPES; RARE EARTH NUCLEI; SHELL MODELS; STABLE ISOTOPES
Optional Information
- Contract/Grant/Project number
- Grant NSC77-0208-M009-09