1st Lifetime Measurement Of Dipole Collective Bands In Neutron-Deficient Lead Nuclei

T. Wang,E. Henry,J. Becker,A. Kuhnert, M. Stoyer,S. Yates, M. Brinkman,J. Cizewski,A. Macchiavelli,F. Stephens, M. Deleplanque,R. Diamond,J. Draper,F. Azaiez,W. Kelly,W. Korten, E. Rubel, Y. Akovali

PHYSICAL REVIEW LETTERS（1992）

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Abstract

Lifetimes of states in two DELTA-I = 1 bands in 198Pb have been measured using the Doppler-shift attenuation method. The in-band reduced transition probabilities are approximately 1-2 Weisskopf units, assuming magnetic dipole transitions. The measured lifetimes in conjunction with the partial level scheme support an oblate collective interpretation for these structures.

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Key words

transition probability,charge distribution,doppler shift

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