权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Microscopic Study of Dynamical Mechanism of Nucleus-Nucleus Reaction

核-核反应动力学机制的微观研究

基本信息

批准号：
02640224
负责人：
HORIUCHI Hisashi
金额：
$ 1.6万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1990
资助国家：
日本
起止时间：
1990 至 1992
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02640224/
关键词：
Cluster Production Antisymmetrized Molecular Dynamics Quantum Molecular Dynamics Quantum Mechanical Microscopic Simulation Shell Effect Multi-step Statistical Decay Spin Polarization of Projectile Fragment Frictional Cooling 入射核破粋片のスピン偏極 /

项目摘要

Intermediate Energy Heavy Ion Reaction: (1) We succeeded the stabilization of the initial condition for the first time in quantum molecular dynamics (QMD). Multistep statistical decays of dynamically produced fragments were calculated. Fusion reaction, Wilczynski plot, energy spectra of fragments, cluster mass distribution, spin polarization of projectile fragments, and others were calculated and shown to fit the data. (2) We have succeeded for the first time to construct a quantum mechanical microscopic simulation theory, which we call antisymmetrized molecular dynamics (AMD). Shell effects are describable and large cross section of dynamical alpha-particle production was calculated. Calculations of mass and momentum distribution of clusters were shown to fit the data very well. (3) Frictional cooling method to construct nuclear ground states proved to be a very novel and successful technique for the study of nuclear structure. Magnetic moments of neutron-rich nuclei were very nicely and systematically reproduced.Rearrangement Reaction: In 6-8 nucleon systems we made multi-channel-coupling microscopic calculations and succeeded to reproduce total reaction cross sections. Most important knowledge we got is that one-nucleon transter channel is always indispensable and pseudo-states of deuteron are important.

中间能重离子反应：(1)在量子分子动力学（QMD）中首次实现了初始条件的稳定。计算了动态产生的碎片的多步统计衰减。计算了核聚变反应、Wilczynski图、碎片能谱、团簇质量分布、弹丸碎片自旋极化等参数，并证明与数据拟合。(2)首次成功构建了量子力学微观模拟理论，我们称之为反对称分子动力学（AMD）。壳效应是可描述的，并计算了动态α粒子产生的大截面。星系团的质量和动量分布的计算结果与数据非常吻合。(3)摩擦冷却法构建核基态是研究核结构的一种非常新颖和成功的技术。富中子核的磁矩被很好地系统地再现了。重排反应：在6-8核子体系中，我们进行了多通道耦合微观计算，成功地再现了总反应截面。我们得到的最重要的知识是，单核子转移通道总是必不可少的，氘核的伪态是重要的。