earticle

영어

A Compton camera, which is based on Compton kinematics, is a very promising gamma-ray imaging device in that it couldovercome the limitations of the conventional gamma-ray imaging devices. In the present study, the image quality of a rotating Comptoncamera was evaluated by using 4-D Monte Carlo simulation technique and the applicability to nuclear industrial applications wasexamined. It was found that Compton images were significantly improved when the Compton camera rotates around a gamma-raysource. It was also found that the 3-D imaging capability of a Compton camera could enable us to accurately determine the 3-D locationof radioactive contamination in a concrete wall for decommissioning purpose of nuclear facilities. The 4-D Monte Carlo simulationtechnique, which was applied to the Compton camera fields for the first time, could be also used to model the time-dependent geometryfor various applications.