Particle decay studies at or near closed shells
We summarize briefly two sets of investigations. In the first one ..cap alpha..-decay rates of neutron-deficient even-even Pb isotopes were studied by using the UNISOR separator on-line at the Holifield Heavy Ion Research Facility. These data indicate that midway between N = 82 and N = 126, the Z = 82 shell gap may not exist. The second investigation, carried out at the Lawrence Berkeley Laboratory 88-Inch Cyclotron and SuperHILAC, has dealt with the delayed-proton decays of the N = 81 precursors /sup 147/Dy, /sup 149/Er, and /sup 151/Yb. All three proton spectra have sharp peaks and thus provide evidence for greatly reduced level densities in the N = 82 proton emitting nuclei /sup 147/Tb, /sup 149/Ho, and /sup 151/Tm. 6 refs., 3 figs.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC03-76SF00098; AC05-76OR00033; AC05-84OR21400
- OSTI ID:
- 5309912
- Report Number(s):
- CONF-850942-23; ON: DE85018102
- Resource Relation:
- Conference: 190. American Chemical Society national meeting, Chicago, IL, USA, 8 Sep 1985
- Country of Publication:
- United States
- Language:
- English
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DYSPROSIUM 147
PROTON EMISSION DECAY
ERBIUM 149
LEAD 186
ALPHA DECAY
LEAD 188
LEAD 190
LEAD 192
LEAD 194
YTTERBIUM 151
ENERGY LEVELS
ERBIUM 150
EXPERIMENTAL DATA
HOLMIUM 149
TERBIUM 147
THULIUM 151
ALPHA DECAY RADIOISOTOPES
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
DATA
DECAY
DYSPROSIUM ISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
ERBIUM ISOTOPES
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
HEAVY NUCLEI
HOLMIUM ISOTOPES
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LEAD ISOTOPES
MINUTES LIVING RADIOISOTOPES
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
SECONDS LIVING RADIOISOTOPES
TERBIUM ISOTOPES
THULIUM ISOTOPES
YTTERBIUM ISOTOPES
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