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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.

Nuclear reactions; 92Mo(54Fe, alpha2p), E=240 MeV; Measured Egamma, Igamma, <FONT FACE=Symbol>gg</FONT>-coincidence; 140Gd deduced high-spin levels, J, pi, configurations; Isomer


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