Study of High Energy Light Ion Reaction with Antisymmetrized Molecular Dynamics

高能轻离子反应反对称分子动力学研究

基本信息

批准号：
07640395
负责人：
HORIUCHI Hisashi
金额：
$ 1.34万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1997
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07640395/
关键词：
AMD quasi free elastic scattering target fragmentation reaction DELTA hole excitation heavy-ion induced fragmentation neutron-rich nuclei neutron dripline clustering structure △空孔励起中性子Clripline 核媒質中二核子衝突断面積反応断面積破砕反応一粒子運動励起

项目摘要

This research project was advanced for three years from 1995 to 1997. The project was on the study of two kinds of reaction processes induced by high energy light ions, for which the theoretical analyzes with antisymmetrized molecular dynamics (abbreviated to AMD) are utilized. One kind of reaction process we studied was such type of reaction process like quasi-free elastic scattering or DELTA-hole excitation in (p, p') , (p, n) , or (^3He, t) . The other kind of reaction process was the so-called target fragmentation by light ion projectiles, The former half of the present three-year research project was devoted mainly to the study of the first kind of reaction process with many fruitful results, while the latter half of three years including this year was devoted mainly to the study of the second kind of reaction process. The study of the first kind of reaction process succeeded in reproducing many experimental data and made a big contribution in clarifying the preequilibrium reactio … More n mechanism. Furthermore, analyzes of reaction cross sections of proton induced reactions gave us important information on the two-nucleon collision cross sections in nuclear medium. In the study of the second kind of reaction process, we investigated the target fragmentation by light ion projectiles, by analysing the fragmentation reaction of ^<12>C nucleus by proton injection. This analysis was made by comparing with the fragmentation reaction of ^<12>C nucleus by ^<14>N injection. Furthemore, in addition to the comparison with heavy-ion induced fragmentation, we also compared the proton induced fragmentation of ^<12>C nucleus with the ^4He induced fragmentation of ^<12>C nucleus. We found large difference between proton induced fragmentation and heavy-ion induced fragmentation and clarified the reason of this difference. This study of the fragmentation reaction gave the motivation to the study of the structure of the neutron-rich Boron isotopes by the use of fragmentation reaction. The results of the fragmentation study of the neutron-rich Boron isotopes strongly suggested the usefulness of the fragmentation reaction for checking the clustering structure of the neutron-rich Boron isotopes. Less

该研究项目从1995年到1997年历时三年进行，主要研究高能轻离子引发的两种反应过程，利用反对称分子动力学（AMD）理论巢。我们研究的反应过程类型是准自由弹性散射或 DELTA 空穴激发 (p, p') 、 (p, n) 或(^3He, t) . 另一种反应过程是所谓的轻离子弹丸击碎目标，目前三年的研究项目的前半部分主要致力于第一种反应过程的研究。取得了很多丰硕的成果，而包括今年在内的三年后半年主要致力于第二种反应过程的研究，第一种反应过程的研究成功地再现了许多实验数据，为澄清做出了很大的贡献。预平衡反应...此外，质子诱导反应的反应截面巢为我们提供了有关核介质中双核子碰撞截面的重要信息。在第二类反应过程的研究中，我们研究了轻离子的靶碎片。此外，通过分析由质子注射引起的^ 12 C核的碎裂反应，还通过与由^ 14 N注射引起的^ 12 C核碎裂反应进行比较。为了与重离子诱导碎裂进行比较，我们还将^12C核的质子诱导碎裂与^4He诱导的^12C核碎裂进行比较，发现质子诱导碎裂与重离子诱导碎裂之间存在很大差异。诱导碎裂并阐明了这种差异的原因。碎裂反应的研究为利用碎裂反应研究富中子硼同位素的结构提供了动力。对富中子硼同位素的研究强烈表明了碎裂反应对于检查富中子硼同位素的簇结构的有用性。