| Item type |
報告書_02 / Research Paper(1) |
| 公開日 |
2008-03-28 |
| タイトル |
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|
タイトル |
粒子-ガンマ線相関を用いた重イオン共鳴の分子的構造の分析 |
| 言語 |
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|
言語 |
jpn |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
粒子 |
| キーワード |
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|
主題Scheme |
Other |
|
主題 |
ガンマ線 |
| キーワード |
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|
主題Scheme |
Other |
|
主題 |
重イオン共鳴 |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
原子核 |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_18ws |
|
資源タイプ |
research report |
| 作成者 |
上柿, 英二
阿部, 恭久
UEGAKI, Eiji
ABE, Yoshihisa
|
| 内容記述（抄録） |
|
|
内容記述タイプ |
Other |
|
内容記述 |
Particle-particle-gamma data from 28Si+28Si molecular resonances was analised. By using R-matrix scattering amplitudes from high-spin molecular model, we can theoretically calculate gamma-ray intensities from the fragments 28Si which are emitted from the resonance decays. The experimental data suggest "m = 0" which means the spins vectors of 28Si are on the reaction plane. We studied what molecular normal modes exibits such a special nuclear structure. Following mechanism has been expected to obtain the spins parallel to the plane; 1. the stable configuration of 28Si + 28Si is expected to be an equator-equator touching configuration, 2. such a stable configuration has a tri-axial deformation, 3. due to extremely high spin rotation(J=38), the total deformed object rotates around the axis of highest moments of inertia, which give rise to K-mixing so called wobbling mode. Then the symmetry axes of two 28Si are perpendicular to the plane, and the spin vectors are on the plane because they are orthogonal to the axes. Such a rotational mode is possible for the molecular ground state and the butterfly and anti-butterfly modes. We have also another mode twisting to obtain non-alignments by simpler mechanism, in which two 28Si spin around the molecular axis in the opposite spin-vector directions. The vectors are parallel to the molecular axis which rotates on the reaction plane. Comparing theoretical results with the data, we conclude that the molecular ground state with wobbling rotation is a candidate for the resonance structure. The other two are not good candidates by the following reason. In the butterfly mode and the twisting one the spin vcctors are parallel to the fragment direction and the beam one, respectively. Even with the spins parallel to the reaction plane, we obtained no "m = 0" from too much concentrated vectors to own directions, because "m = 0" require" symmetry around z-axis" . |
| 著者版フラグ |
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出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 書誌情報 |
p. 1-61,
発行日 2004-03-01
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| 出版者 |
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出版者 |
秋田大学 |
| 備考 |
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平成12年度-平成14年度科学研究費補助金(基盤研究(C)(2))研究成果報告書 |
uegaki.pdf (2.7 MB)
