Discovery of rare neutron-rich Zr, Nb, Mo, Tc, and Ru isotopes in fission: Test of. beta. half-life predictions very far from stability
Journal Article
·
· Physical Review Letters; (United States)
- Department of Physics, University of Jyvaeskylae, Jyvaeskylae (Finland) Institute de Physique Nucleaire, Universite Claude Bernard, Villeurbanne (France) Department of Physics, University of Helsinki, Helsinki (Finland) Department of Experimental Physics, Warsaw University, Warsaw (Poland) Institut fuer Kerchemie, Universitaet Mainz, Mainz (Germany)
In experiments employing fast ion-guide-based on-line mass separation we have identified six new, rare nuclides of highly refractory elements produced in the fission of {sup 238}U by 20-MeV protons. The new isotopes {sup 105}Zr, {sup 107}Nb, {sup 109}Mo, {sup 110}Mo, {sup 113}Tc, and {sup 115}Ru were identified through ({beta}, {ital K}{sub {alpha}} x-ray) coincidences and {beta}-delayed {gamma} decay. The observed {beta} half-lives range from 130 ms to approximately 1 s. All our recent {beta} half-life data are compared with predictions of the deformed quasirandom-phase-approximation model. The main uncertainty is found to be the inaccuracy of the decay energy predictions.
- OSTI ID:
- 7173459
- Journal Information:
- Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 69:8; ISSN PRLTA; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
663210* -- Ground-State Radioactivity-- (1992-)
663470 -- Fission-- (1992-)
663560 -- Nuclear Mass Ranges-- A=90-149-- (1992-)
663590 -- Nuclear Mass Ranges-- A=220 & Above-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALKALI METAL ISOTOPES
ALPHA DECAY RADIOISOTOPES
BETA DECAY
COINCIDENCE METHODS
COUNTING TECHNIQUES
DATA
DECAY
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
FISSION
GAMMA SPECTRA
HEAVY NUCLEI
INFORMATION
ISOTOPE PRODUCTION
ISOTOPES
LIFETIME
MOLYBDENUM ISOTOPES
NIOBIUM ISOTOPES
NUCLEAR DECAY
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
RADIOISOTOPES
RANDOM PHASE APPROXIMATION
RUBIDIUM ISOTOPES
SPECTRA
SPONTANEOUS FISSION RADIOISOTOPES
TECHNETIUM ISOTOPES
URANIUM 238
URANIUM ISOTOPES
YEARS LIVING RADIOISOTOPES
ZIRCONIUM ISOTOPES
663470 -- Fission-- (1992-)
663560 -- Nuclear Mass Ranges-- A=90-149-- (1992-)
663590 -- Nuclear Mass Ranges-- A=220 & Above-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALKALI METAL ISOTOPES
ALPHA DECAY RADIOISOTOPES
BETA DECAY
COINCIDENCE METHODS
COUNTING TECHNIQUES
DATA
DECAY
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
FISSION
GAMMA SPECTRA
HEAVY NUCLEI
INFORMATION
ISOTOPE PRODUCTION
ISOTOPES
LIFETIME
MOLYBDENUM ISOTOPES
NIOBIUM ISOTOPES
NUCLEAR DECAY
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
RADIOISOTOPES
RANDOM PHASE APPROXIMATION
RUBIDIUM ISOTOPES
SPECTRA
SPONTANEOUS FISSION RADIOISOTOPES
TECHNETIUM ISOTOPES
URANIUM 238
URANIUM ISOTOPES
YEARS LIVING RADIOISOTOPES
ZIRCONIUM ISOTOPES