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DYNAMICAL ASPECT OF RESIDUAL NUCLEUS PRODUCTION ON MATERIAL FOR ACCELERATOR DRIVEN SYSTEM

加速器驱动系统材料残余核产生的动力学方面

基本信息

批准号：
13480149
负责人：
UOZUMI Yusuke
金额：
$ 6.21万
依托单位：
KYUSHU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2004
项目状态：
已结题

项目摘要

Accelerator driven systems attract much attention as an advanced reactor and a nuclear waste transmutation system. Since such systems utilize a high-energy proton beam from a particle accelerator, there are serious problems with material damage. In the present research, light particle emissions from nuclear reactions were investigated in order to comprehend residual nucleus production processes at several hundreds MeV range.In this year, we made serious analyses of data obtained last year at the accelerator facility of Osaka university and compared energy spectra of protons and deuterons with theoretical calculations to investigate the predictive ability. It is demonstrated that an INC code based on the cascade model gives much better agreement due to the correction about nuclear ground state. We have come to a concrete plan for further improvement. In terms of the deuteron emission process, we have incorporated preformed cluster knock-out process. In contrast, the quantum molecular dynamics model was found to have discrepancy for heavy mass targets.Moreover, we carried out an experiment at the Joint Institute for Nuclear Research, Russia in order to realize a new project for actinide data. This experiment was oriented mainly to test new crystal detector. We convinced their high performances and expect high accuracy data on actinide nuclei available with the new detector system.

加速器驱动系统作为一种先进的反应堆和核废料转化系统备受关注。由于这种系统使用的是来自粒子加速器的高能质子束，因此存在严重的材料损坏问题。在本研究中，为了了解数百MeV范围内剩余核的产生过程，我们调查了核反应中的轻粒子发射。今年，我们对去年在大阪大学加速器装置上获得的数据进行了认真的分析，并将质子和氘的能谱与理论计算进行了比较，以考察其预测能力。结果表明，基于级联模型的INC程序由于对核基态的修正，给出了更好的一致性。我们已经达成了进一步改进的具体计划。在氚的发射过程方面，我们加入了预先形成的团簇剔除过程。相比之下，量子分子动力学模型对于重质量的目标有不一致的地方。此外，我们在俄罗斯联合核研究所进行了一项实验，以实现一个新的鳗系元素数据项目。本实验主要是为了测试新型晶体探测器。我们相信他们的高性能，并期待新的探测器系统提供高精度的鳗系元素核数据。