Performance Verification of the OSL DMSc Holder

OSL DMSc Holder Verification

Abstract

         The InLight^® holder, previously used to contain an optically stimulated luminescence (OSL) dosimeter, due to its fragility and insufficient durability. To address these shortcomings, we developed the Department of Medical Sciences (DMSc) holder, a more robust and user-friendly cartridge holder. This study aimed to verify the performance of DMSc holder in compliance with the Japanese Industrial Standards Committee (JIS) 4339:2004 (R2016). As a result, it was indicated a 1.085 deviation in radiation quantity measurements. The dose linearity of radiation quantities at 0.1, 0.3, 0.5, 1.0 and 10.0 mSv yielded values of 1.158±0.074, 1.023±0.053, 1.034±0.050, 1.000±0.043 and 0.968±0.037, respectively. The photon energy responses at X-ray 24, 47, 83, and 117 keV, the values were measured at 1.090±0.048, 1.040±0.108, 1.010±0.091, and 0.987±0.062, while at 662 keV, it was 1.000±0.054. Regarding angular dependence in horizontal radiation quantity assessment at angles of 60° left, 30° left, 0° center, 30° right, and 60° right, the values were measured at 0.999±0.066, 0.988±0.046, 1.000±0.050, 0.988±0.053, and 0.985±0.042, respectively. In comparison with the InLight^® holder, the DMSc holder displayed acceptable differences in dose linearity and angular response tests for horizontal radiation quantity assessment. All test results affirm that the newly developed DMSc holder is well-suited for use in personal radiation exposure risk assessment.