摘要
目前国产FC751闪烁放射性测井仪,使用5居里的镅铍中子源,装源取源是在无屏蔽的状态下进行的,源对人体辐射所造成的危害很大。本文提出了一种新的装源方法,并给出了防护计算与结构设计,使装源取源都在源罐内进行,从而大大降低了辐射剂量,有益于操作人员的身体健康。
At present, an americium-beryllium neutron source of 5 Ci intensity isused on demostie-made scintillation radioactivity logging tool. Installationand removal of the neutron source is made in a non-shielding surrounding.Radiation of the source is very harmful to operator's and other people'shealth. This paper presents a new method of source installation. Source instal-lation and removal operation is made in the can. The shielding calculationand structure design are provided. The radiation flux is lower in this casethan previous method.
