Dopper shift attenuation lifetime measurement in 54Cr following thermal neutron capture
1988; Elsevier BV; Volume: 215; Issue: 1 Linguagem: Inglês
10.1016/0370-2693(88)91068-4
ISSN1873-2445
AutoresK. P. Lieb, H. G. Börner, M. S. Dewey, J. Jolie, S. J. Robinson, S. Ulbig, C.H. Winter,
Tópico(s)X-ray Spectroscopy and Fluorescence Analysis
ResumoThe double crystal spectrometer GAMS4 in combination with the ILL high flux reactor has been used to determine the lifetimes of the 2620 KeV 2+2, 3074 KeV 2+3 and 3720 KeV (1, 2)+ states in 54Cr. The initial recoil energy of about 0.5 KeV imparted by the primary γ-radiation after thermal neutron capture in 53Cr produces Doppler broadened line shapes of the secondary transitions. The large 2+3→2+1 M1 strength of B(M1)=0.39(6) μ2N suggests the 2+3 state to be mixed symmetry character within the interacting boson model IBM-2.
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