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A trial product of capsules and control system for improved contssion neutron irradiation experiments

改进压缩中子辐照实验的胶囊和控制系统的试制产品

基本信息

批准号：
06558070
负责人：
YOSHIIE Toshimasa
金额：
$ 4.03万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research (B)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06558070/
关键词：
Fission neutrons Materials radiation effect Control irradiation Radiation damage Electron microscopy 材料照射

项目摘要

In most cases of the temperature-neutron flux history during the fission reactor irradiation of materials, the control of temperature during irradiation is performed by the balance between heating by gamma-ray from nuclear reactions and cooling by heat conduction to the coolant. By this method, it is obviously impossible to maintain samples at the desired temperature during the start-up and shut-down of a reactor at which the gamma-heating is not sufficient.This research project is to make a trial product of irradiation capsule and control system for the hydrodynamic tube of a nuclear reactor of Kyoto University Research Reactor Institute (KUR) in order to accomplish an improved control of neutron flux-temperature history. The capsule has an ability to heat the specimen in it at above 573K using an electric heater near the specimen. After several test including out of file test, the neutron irradiation experiment with improved temperature control was performed at 473K for 3 hours. The samples were Au, Cu, Fe, Cu alloys, Ni alloys and stainless steels and the defect structures were observed by electron microscopy and several data were acquired.

在裂变反应堆辐照材料的温度-中子通量历史的大多数情况下，辐照过程中的温度控制是通过核反应产生的伽马射线加热和向冷却剂的热传导冷却之间的平衡来实现的。通过这种方法，显然不可能在伽马加热不足的反应堆的启动和关闭过程中将样品保持在期望的温度。本研究项目是为了实现对京都大学反应堆研究所(KUR)反应堆流体力学管的辐照胶囊和控制系统的试制，以实现对中子通量-温度历史的改进控制。胶囊能够在573K以上的温度下使用样品附近的电热水器对样品进行加热。经过包括文件外试验在内的多次试验，改进了温度控制，在473K下进行了3h的中子辐照实验。用电子显微镜观察了金、铜、铁、铜合金、镍合金和不锈钢的缺陷结构，并获得了一些数据。