Exotic N =82 nuclei sup 153 Lu and sup 154 Hf and filling of the. pi. h sub 11/2 subshell

Microsecond isomers in the very proton-rich {ital N}=82 nuclei {sup 153}Lu and {sup 154}Hf have been identified by {gamma}-ray spectroscopy following mass analysis of {sup 102}Pd +245 MeV {sup 54}Fe reaction products using the Daresbury Recoil Separator. The decays of the isomers, interpreted as ({p...

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Veröffentlicht in:	Physical review letters 1989-08, Vol.63:8
Hauptverfasser:	McNeill, J.H., Blomqvist, J., Chishti, A.A., Daly, P.J., Gelletly, W., Hotchkis, M.A.C., Piiparinen, M., Varley, B.J., Woods, P.J.
Format:	Artikel
Sprache:	eng
Schlagworte:	651820 - Nuclear Properties & Reactions, A=150-189, Experimental BETA DECAY RADIOISOTOPES BETA-PLUS DECAY RADIOISOTOPES BRANCHING RATIO CHARGED-PARTICLE REACTIONS CROSS SECTIONS E2-TRANSITIONS ELECTRON CAPTURE RADIOISOTOPES ENERGY RANGE ENERGY-LEVEL TRANSITIONS EVEN-EVEN NUCLEI EVEN-ODD NUCLEI GAMMA SPECTROSCOPY HAFNIUM 154 HAFNIUM ISOTOPES HEAVY ION FUSION REACTIONS HEAVY ION REACTIONS INTERMEDI INTERMEDIATE MASS NUCLEI IRON 54 REACTIONS ISOMERIC NUCLEI ISOMERIC TRANSITION ISOTOPES ISOTOPES LUTETIUM 153 LUTETIUM 154 LUTETIUM ISOTOPES MEV RANGE MEV RANGE 100-1000 MICROSEC LIVING RADIOISOTOPES MILLISEC LIVING RADIOISOTOPES MULTIPOLE TRANSITIONS NUCLEAR PHYSICS AND RADIATION PHYSICS NUCLEAR REACTIONS NUCLEI ODD-EVEN NUCLEI ODD-ODD NUCLEI PALLADIUM 102 TARGET RADIOISOTOPES RARE EARTH ISOTOPES RARE EARTH NUCLEI SECONDS LIVING SECONDS LIVING RADIOISOTOPES SPECTROSCOPY TARGETS YTTERBIUM 153 YTTERBIUM ISOTOPES
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Zusammenfassung:	Microsecond isomers in the very proton-rich {ital N}=82 nuclei {sup 153}Lu and {sup 154}Hf have been identified by {gamma}-ray spectroscopy following mass analysis of {sup 102}Pd +245 MeV {sup 54}Fe reaction products using the Daresbury Recoil Separator. The decays of the isomers, interpreted as ({pi}{ital h}{sub 11/2}){sup n} states, are characterized. Examination of reduced {ital E}2 transition rates between ({pi}{ital h}{sub 11/2}){sup n} states in the {ital N}=82 isotones indicates that the half-filling of the {pi}{ital h}{sub 11/2} subshell occurs just below {ital Z}=71.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.63.860