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Prog. Theor. Phys. Vol. 57 No. 4 (1977) pp. 1262-1276

[ Full Text PDF : FREE ACCESS (1481K) ]

Structure of the Excited States in 12C. I

Eiji Uegaki, Shigetō Okabe, Yasuhisa Abe* and Hajime Tanaka

Department of Physics, Hokkaido University, Sapporo 060
*Research Institute for Fundamental Physics, Kyoto University, Kyoto 606

(Received October 18, 1976)

Abstract:

Structure of both positive- and negative-parity states in 12C is studied with a microscopic 3 α-particle model. The c.m. motions of 3 α-clusters are treated by the generator coordinate method. All the levels with T=0 below 15 MeV (except the 12.7 MeV 1+ level) are successfully reproduced, including the famous 02+ level and the next positive-parity level which is regarded as 22+. Another 2+, 31+ and two 4+ states which have a structure quite similar to that of the 02+ and 22+ states are predicted with large K-mixings. Furthermore the present investigation predicts an existence of 03+ state. The structure of all the above excited positive-parity states is quite different from that expected in the shell model, but rather should be considered that of a finite α-boson gas. The negative-parity levels are quite well described as members of the Kπ = 3- and 1- bands in the present model.


URL : http://ptp.ipap.jp/link?PTP/57/1262/
DOI : 10.1143/PTP.57.1262

[ Full Text PDF : FREE ACCESS (1481K) ] Citation:

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