Decay properties of /sup 81/Ga and /sup 81/Ge and observation of abnormal energy shift in the p/sub 1/2/ state

/sup 81/Ga is efficiently produced in the isotope separator on-line facility OSIRIS at Studsvik, utilizing thermal fission of /sup 235/U. The germanium isobars are studied as daughter products. Investigations involving singles gamma -ray spectroscopy, gamma gamma -coincidences, beta gamma -coinciden...

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Detalles Bibliográficos
Autores principales: Hoff, P, Aleklett, K, Fogelberg, B, Lund, E, Rudstam, G
Lenguaje:eng
Publicado: CERN 1981
Materias:
Nuclear Physics
Acceso en línea:https://dx.doi.org/10.5170/CERN-1981-009.413
http://cds.cern.ch/record/878058
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author Hoff, P
Aleklett, K
Fogelberg, B
Lund, E
Rudstam, G
author_facet Hoff, P
Aleklett, K
Fogelberg, B
Lund, E
Rudstam, G
author_sort Hoff, P
collection CERN
description /sup 81/Ga is efficiently produced in the isotope separator on-line facility OSIRIS at Studsvik, utilizing thermal fission of /sup 235/U. The germanium isobars are studied as daughter products. Investigations involving singles gamma -ray spectroscopy, gamma gamma -coincidences, beta gamma -coincidences and level half-life measurements have been performed. Detailed decay n schemes for /sup 81/Ga (T/sub 1/2/=1.23 s) and the two isomers of /sup 81/Ge (both with T/sub 1/2/=7.6 s) are presented. The lowest lying states in /sup 81/Ge are interpreted within the framework of the collective model. Positive parity intruder states are observed and characterized. A shift of about 500 keV in the relative energy of the p/sub 1/2/ state is observed, resulting in a 1 /2/sup +/ beta -decaying isomeric state in /sup 81/Ge. In the decay of the high-spin isomer of /sup 81/Ge, selective population of a small number of states is observed. (18 refs).
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1981
publisher CERN
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spelling cern-8780582019-09-30T06:29:59Zdoi:10.5170/CERN-1981-009.413http://cds.cern.ch/record/878058engHoff, PAleklett, KFogelberg, BLund, ERudstam, GDecay properties of /sup 81/Ga and /sup 81/Ge and observation of abnormal energy shift in the p/sub 1/2/ stateNuclear Physics/sup 81/Ga is efficiently produced in the isotope separator on-line facility OSIRIS at Studsvik, utilizing thermal fission of /sup 235/U. The germanium isobars are studied as daughter products. Investigations involving singles gamma -ray spectroscopy, gamma gamma -coincidences, beta gamma -coincidences and level half-life measurements have been performed. Detailed decay n schemes for /sup 81/Ga (T/sub 1/2/=1.23 s) and the two isomers of /sup 81/Ge (both with T/sub 1/2/=7.6 s) are presented. The lowest lying states in /sup 81/Ge are interpreted within the framework of the collective model. Positive parity intruder states are observed and characterized. A shift of about 500 keV in the relative energy of the p/sub 1/2/ state is observed, resulting in a 1 /2/sup +/ beta -decaying isomeric state in /sup 81/Ge. In the decay of the high-spin isomer of /sup 81/Ge, selective population of a small number of states is observed. (18 refs).CERNoai:cds.cern.ch:8780581981
spellingShingle Nuclear Physics
Hoff, P
Aleklett, K
Fogelberg, B
Lund, E
Rudstam, G
Decay properties of /sup 81/Ga and /sup 81/Ge and observation of abnormal energy shift in the p/sub 1/2/ state
title Decay properties of /sup 81/Ga and /sup 81/Ge and observation of abnormal energy shift in the p/sub 1/2/ state
title_full Decay properties of /sup 81/Ga and /sup 81/Ge and observation of abnormal energy shift in the p/sub 1/2/ state
title_fullStr Decay properties of /sup 81/Ga and /sup 81/Ge and observation of abnormal energy shift in the p/sub 1/2/ state
title_full_unstemmed Decay properties of /sup 81/Ga and /sup 81/Ge and observation of abnormal energy shift in the p/sub 1/2/ state
title_short Decay properties of /sup 81/Ga and /sup 81/Ge and observation of abnormal energy shift in the p/sub 1/2/ state
title_sort decay properties of /sup 81/ga and /sup 81/ge and observation of abnormal energy shift in the p/sub 1/2/ state
topic Nuclear Physics
url https://dx.doi.org/10.5170/CERN-1981-009.413
http://cds.cern.ch/record/878058
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AT lunde decaypropertiesofsup81gaandsup81geandobservationofabnormalenergyshiftinthepsub12state
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