摘要
介绍了用Ｂｒｏｄｅｒ公式表示累积因子，对γ线源进行多重屏蔽的最优化计算方法。计算了用３０根每根为１×１０￣４Ｃｉ的￣（６０）Ｃｏ线源构成的矩形栅板源，在贮源井内，依次经水、铅和混凝土屏蔽时，井盖和井壁在给定条件下的最优化铅屏蔽层厚度，并给出了源贮存井的最优化构型。在最优化的屏蔽条件下，贮存井上方任何位置的剂量当量率将低于３．１４×１０￣（－３）ｍＳｖ／ｈ，在主井的每次检修期内，工作人员实际的受照剂量当量将不会超过０．０７ｍＳｖ。
This paper presents an optimization calculation method of multiplet shielding for the γ-ray linear source in whieh the accumulation factor are expressed by the Broder formula .A rectangulargrid source was composed of thirty 60Co γ-ray linear sources,every one of which is 1×104 curie.When the rectangular grid source is in the storage well and shielded by water, lead concretes inproper order,the optimiyation lead shielding thichness of the well cover and the well wall havebeen calculated under a given condition,thus determining the optimized configuratim of thesource storage well.The dose equivalent rate in any area on the storage well will be lower then 3.14 × 10-3 mSv/h under the optimization condition. during inspection and repair of the main wellthe workers exposed to radiation fields actually incur effective dose equivalent no more then 0.07mSv.
出处
《核科学与工程》
CSCD
北大核心
1995年第4期367-376,共10页
Nuclear Science and Engineering
关键词
贮存井
多重屏蔽
最优化计算
钴60源
Co source storage well multiplet shielding optimization calculation dose equivalent rate.
