Lifetime measurements of states in 41Ca and 41K
1974; Elsevier BV; Volume: 223; Issue: 3 Linguagem: Inglês
10.1016/0375-9474(74)90699-x
ISSN1873-1554
AutoresK. P. Lieb, M. Uhrmacher, J. Dauk, Alan M. Kleinfeld,
Tópico(s)X-ray Spectroscopy and Fluorescence Analysis
ResumoMeasurements of the γ-ray decay of states in 41Ca and 41K populated in the reactions 27Al(16O, pn) and 27Al(16O, 2p) have been performed. Using the recoil distance Doppler shift method, mean lifetimes were determined for states in 41Ca at 3370 keV (28 ± 5 ps), 3830 keV (4.4 ± 0.3 ns) and 3915 keV (2.6 ± 0.8 ps), and in 41K at 2528 keV (230 ± 12 ps), 2761 keV (1.3.+1.1−0.6 ps), 2774 keV (74 ± 8 ps) and 4983 keV (101 ± 5 ps). The 3370 and 3830 keV states in 41Ca are suggested to be Jπ = 112+ and 152+, respectively, having predominantly 2p–1h configurations. These suggestions contradict a recent interpretation of these states as being members of a strongly deformed K = 32− rotational band.
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