Shape Coexistence and Band Termination in Doubly Magic Nucleus 40Ca |
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Authors: | DONG Bao-Guo GUO Hong-Chao SHI Yi-Jin |
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Institution: | Department of Nuclear Physics, China Institute of Atomic Energy,
P.O. Box 275(18), Beijing 102413, China |
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Abstract: | Shape coexistence and band structure near yrast line of the Z=N doubly
magic nucleus 40Ca have been investigated by the configuration-dependent cranked Nilsson-Strutinsky approach. The observed normal deformed and superdeformed bands are explained and the terminating states are confirmed by the calculations. The transition quadrupole moment
Qt of the calculated superdeformed band is in good agreement with the observed one at high spin. There is shape coexistence within the same configuration. Possible normal deformed and superdeformed bands with
rotation around the intermediate axis in several interesting configurations
of 40Ca are discussed. Possible favored superdeformed band terminations in 38Ca and
38Ar are predicted. The experimental results in
38Ar are discussed simply. |
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Keywords: | shape coexistence configuration-dependent cranked Nilsson-Strutinsky approach superdeformed band termination transition quadrupole moment |
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