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Hiromichi Ogasawara, Kenichi Yoshida, Masayuki Yamagami, Shoujirou Mizutori, Kenichi Matsuyanagi, Rotational Frequency Dependence of Octupole Vibrations on Superdeformed States in 40Ca, Progress of Theoretical Physics, Volume 121, Issue 2, February 2009, Pages 357–374, https://doi.org/10.1143/PTP.121.357
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Abstract
By means of the random phase approximation (RPA) calculation based on cranked deformed Woods-Saxon potential, we investigate how rotational motion affects the properties of octupole vibrations built on superdeformed states in 40Ca. A major structure change of the superdeformed yrast states toward a reflection-asymmetric shape is suggested to take place in the region of angular momentum a little higher than the observed maximum value 16ħ, owing to a cooperative effect of octupole vibrational correlation and the rotation-aligned particle-hole excitations from the f7/2 to the g9/2 shell.