Abstract

The 170Er(α, 3n) 171Yb reaction is used to populate rotational states built on the 7 2 +[633], 1 2 −[521], 5 2 −[512] and 11 2 −[505] intrinsic states. Particular attention is paid to the positiveparity band. The rotational energies within this band are successfully explained within the unified model with pairing and Coriolis interactions included, provided the theoretical Coriolis matrix elements are reduced. With the wave functions obtained from this energy fit the experimental E2/M1 amplitude mixing ratios are well reproduced. These wave functions also reproduce the cross-section pattern obtained in transfer-reaction experiments very well.

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