DOSE-EQUIVALENT RESPONSE OF PERSONAL NEUTRON DOSIMETERS AS A FUNCTIONOF ANGLE

The measured and calculated dose equivalent response as a function of angle has been examined for an albedo-type thermoluminescence dosemete r (TLD) that was exposed to unmoderated and D2O-moderated Cf-252 neutr on sources while mounted on a 40 x 40 x 15 cm(3) polymethylmethacrylat e phantom. The dosemeter used in this study is similar to many neutron personal dosemeters currently in use. The detailed construction of th e dosemeter was modelled, and the dose equivalent response was calcula ted, using the MCNP code. Good agreement was found between the measure d and calculated values of the relative dose equivalent angular respon de for the TLD albedo dosemeter. The relative dose equivalent angular response was also compared with the values of directional and personal dose equivalent as a function of angle published by Siebert and Schuh macher.