Octupole Transitions in the 208 Pb Region Octupole Transitions in the Pb Region
نویسندگان
چکیده
The Pb region is characterised by the existence of collective octupole states. Here we populated such states in Pb + Pb deep-inelastic reactions. γ-ray angular distribution measurements were used to infer the octupole character of several E3 transitions. The octupole character of the 2318 keV 17− → 14 in Pb, 2485 keV 19/2− → 13/2 in Pb, 2419 keV 15/2− → 9/2 in Pb and 2465 keV 17/2 → 11/2− in Tl transitions was demonstrated for the first time. In addition, shell model calculations were performed using two different sets of two-body matrix elements. Their predictions were compared with emphasis on collective octupole states.
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