1989 Fiscal Year Final Research Report Summary
Study of molecular structure of nuclei in the ^<44>Ti region
| Project/Area Number |
62540212
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
核・宇宙線・素粒子
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| Research Institution | Kochi Women's University |
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Principal Investigator |
OHKUBO Shigeo Dept. of Applied Science, Kochi Women's Univ., Associate Professor, 家政学部, 助教授 (30105366)
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| Project Period (FY) |
1987 – 1989
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| Keywords | alpha-cluster structure / molecular structure / optical potential / backward angle anomaly / alpha-particle scattering / ^<44>Ti / ^<40>Ca / fp-shell nuclei |
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| Research Abstract |
Alpha-cluster model has been very successful in the sd-shell region around ^<20>Ne. However the model has met a great difficulty in ^<44>Ti in the fp-shell region. The point is that the K=0^- band inevitably appears near the threshold in contradiction with the experimental data. Therefore, it has been considered that the alpha-cluster model may be no more valid in describing the nuclear structure in a unified way in this region possibly because of strong spin-orbit force.
By studying the bound and scattering states in a unified way, we could reproduce the alpha+ ^<40>Ca system very well in a wide energy region. And we have predicted that the K= 0^- band should be considered to exist and be searched for in experiment. This has been observed in 1989 at Osaka and it has been established that the alpha-cluster picture still holds in ^<44>Ti including the ground band. We have also shown that the alpha-cluster model holds in the ^<40>Ca nucleus. The K=0^- band was also predicted near tie threshold , which is now being searched for in experiment.
Through the unified study of bound and scattering states in the fp-shell region, we have shown that the alpha-cluster picture still holds in the fp-shell region and should be investigated systematically both theoretically and experimentally.
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Research Products
(22 results)
