Phys. Rev. C 49, 663–671 (1994)High-spin studies of 219AcReceived 16 September 1993; published in the issue dated February 1994 High-spin states up to a probable spin I=45/2 have been investigated in 219Ac using the reaction 209Bi (13C,3n). The alternating parity sequences already observed up to I=31/2 do not seem to develop further at higher spins. A new side band was observed as well as several E2/M1 transitions linking the states of positive parity. Multipolarities and mixing ratios were deduced from an analysis of DCO ratios. In addition mixing ratios were obtained independently from the branching ratios. This allows for determination of B(M1)/B(E2) ratios up to Iπ=29/2+. The data are discussed in terms of a transition from the weak coupling scheme at low and medium spins to the particle-hole regime for I≳31/2. © 1994 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevC.49.663
DOI:
10.1103/PhysRevC.49.663
PACS:
21.60.Ev, 23.20.Gq, 23.20.Lv, 27.80.+w
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