Atomic Energy of Canada Limited, Physics Division, Chalk River Nuclear Laboratories, Chalk River, Ontario, Canada KOJ-1JO;Oberlin College, Oberlin, Ohio, 44074, USA
Abstract:
The branching ratio for the transition from the 0.90 MeV second excited to the 0.57 MeV first excited state in 207Pb has been measured to be (0.59 ± 0.09)%. The corresponding B(M1) exceeds recent theoretical predictions.