In-beam study of the doubly-odd nucleus 61 140 Pm79 above the 8− β +-decaying isomer
Angelis, G. ; Lunardi, S. ; Bazzacco, D. ; Rico, J. ; Terrasi, F. ; Piiparinen, M. ; Atac, A. ; Nyberg, J.
Springer
Published 1993
Springer
Published 1993
| ISSN: |
1434-601X
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| Keywords: |
23.20.Lv ; 27.60. +J ; 25.70.-Z
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| Source: |
Springer Online Journal Archives 1860-2000
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| Topics: |
Physics
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| Notes: |
Abstract An in-beamγ-ray study performed with the114Cd(30Si,p 3n) reaction has established the structure of theN=79 nucleus140Pm. States up toI=(20)ħ and 5.5 MeV excitation energy have been recognized above the 5.95 m isomeric state which we identify, from the GT decay to140Nd, as the 8− member of the (πd 5 2/−1 vh 11 2/−1 ) multiplet, changing the present 7− assignment. The low energy part of the level scheme is discussed in terms of the coupling of the valence holes in respect to theZ=64,N=82 shell closure. A new 8+ isomeric state witht 1/2=1 −0.5 +1 ns has been observed, having most likely a (πh 11/2 vh 11/2 -1 )8 configuration.
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| Type of Medium: |
Electronic Resource
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| URL: |