摘要
为尽快搜寻丢失的γ放射源,模拟设计了用NaI探测器确定γ源方位的铅准直定位装置。设计针对铅准直NaI探测器,运用MCNP软件模拟定位γ源。模拟结果表明,设计的铅准直NaI探测器能够识别γ射线的方向,且角度分辨率高,放射源模拟定位的偏差小,在多个放射源形成的辐射场中能对各个放射源进行定位。
In order to find the missing gamma radioactive source as soon as possible, a NaI detector which is used as the lead collimator positioning device is simulated and designed to locate the gamma radiation source. In this study, MCNP software was used to simulate the lead collimation of NaI detector to determine the position of gamma radiation source. The analog results showed that the designed lead collimation of NaI detector can identi- fy the direction of gamma radiation with a high angular resolution and a low positioning deviation in simulation. In addition, the lead collimation NaI detector can get the positioning of each radiation source in a radiation field produced by a plurality of radiation sources.
出处
《核电子学与探测技术》
CAS
北大核心
2015年第4期354-360,共7页
Nuclear Electronics & Detection Technology
