Choi Hoon, Park Byeongryong, Choi Muhyun, Lee Byungil, Lee Cheol Eui
Radiation Health Research Institute, Korea Hydro and Nuclear Power Co., Ltd., 388-1, Ssangmun, Dobong, Seoul 132-703, Republic of Korea Department of Physics and Institute for Nano Science, Korea University, Seoul 136-713, Republic of Korea.
Radiation Health Research Institute, Korea Hydro and Nuclear Power Co., Ltd., 388-1, Ssangmun, Dobong, Seoul 132-703, Republic of Korea.
Radiat Prot Dosimetry. 2014 Jun;159(1-4):164-71. doi: 10.1093/rpd/ncu171. Epub 2014 May 29.
An alternative method for fingernail/electron paramagnetic resonance (EPR) dosimetry valid at low doses (0-3 Gy) is suggested in this paper. The method consisted of two steps. The first step involved dehydrating fingernail clippings to remove their water content by heating them at 70 °C for 72 h. As the water content in the fingernails decreased, the variability of the EPR signals improved. The second step involved measuring and fitting the EPR signals at successive microwave power levels. A newly derived value known as 'curvature', which was based on the conventional peak-to-peak amplitudes of the EPR signals, was applied for the dosimetry. This method could be used as an alternative method in cases of low-radiation exposure doses (<3 Gy) or where use of the conventional dosimetry method is not proper for a fingernail sample.
本文提出了一种适用于低剂量（0 - 3 Gy）的指甲/电子顺磁共振（EPR）剂量测定的替代方法。该方法包括两个步骤。第一步是通过在70°C下加热72小时来干燥指甲剪屑以去除其水分。随着指甲中水分含量的降低，EPR信号的可变性得到改善。第二步是在连续的微波功率水平下测量和拟合EPR信号。基于EPR信号的传统峰峰值幅度得出的一个新值，即“曲率”，被用于剂量测定。在低辐射暴露剂量（<3 Gy）的情况下，或者在传统剂量测定方法不适用于指甲样本的情况下，该方法可作为一种替代方法使用。
