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

加速器驱动系统作为一种先进的核反应堆和核废料嬗变系统而备受关注。由于这种系统利用来自粒子加速器的高能质子束，因此存在材料损坏的严重问题。本研究为了理解数百MeV范围内的剩余核生成过程，对核反应的轻粒子放射进行了研究。今年，我们对去年在大坂大学加速器设施获得的数据进行了认真分析，并将质子和氘的能谱与理论计算进行了比较，以研究预测能力。结果表明，由于对核基态的修正，基于级联模型的INC程序的计算结果与实验结果吻合得更好。我们已经制定了进一步改进的具体计划。在氘核发射过程中，我们加入了预先形成的团簇敲除过程。与此相反，我们发现量子分子动力学模型对大质量目标的计算结果不一致。此外，为了实现一个新的锕系元素数据项目，我们在俄罗斯联合核研究所进行了一项实验。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，并期待高精度的数据，锕系元素核可与新的探测器系统。

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.