High-K band in 140Gd

High-K band in 140Gd

High-spin states in the neutron-deficient140Gd nucleus have been studied with the 92Mo(54Fe,alpha2p) reaction at a beam energy of 240 MeV. The level scheme of 140Gd was considerably extended from what was previously known. In this work we concentrate on one of the 9 bands observed, which presents relatively strong M1 transitions and negligible signature splitting, and has an isomeric band-head, indicating a strongly coupled or high-K configuration. We compare this band to the Kpi = 8- bands observed in N=74 isotones and propose a similar configuration assignment, but with a somewhat larger deformation.

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Bibliographic Details
Main Authors: Oliveira,J.R.B., Falla-Sotelo,F., Rao,M.N., Alcántara-Núñez,J.A., Cybulska,E.W., Medina,N.H., Ribas,R.V., Rizzutto,M.A., Seale,W.A., Bazzacco,D., Brandolini,F., Lunardi,S., Rossi-Alvarez,C., Petrache,C., Podolyák,Zs., Ur,C.A., Acuña,D. de, Angelis,G.de, Farnea,E., Foltescu,D., Gadea,A., Napoli,D.R., Poli,M. de, Spolaore,P., Ionescu-Bujor,M., Iordachescu,A.
Format: Digital revista
Language:English
Published: Sociedade Brasileira de Física 2006
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332006000800008
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Summary:High-spin states in the neutron-deficient140Gd nucleus have been studied with the 92Mo(54Fe,alpha2p) reaction at a beam energy of 240 MeV. The level scheme of 140Gd was considerably extended from what was previously known. In this work we concentrate on one of the 9 bands observed, which presents relatively strong M1 transitions and negligible signature splitting, and has an isomeric band-head, indicating a strongly coupled or high-K configuration. We compare this band to the Kpi = 8- bands observed in N=74 isotones and propose a similar configuration assignment, but with a somewhat larger deformation.

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