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(0.07) for extremity dose monitoring of medical personnel古渡 意彦*; 吉富 寛; 永元 啓介*; 中上 晃一*; 盛武 敬*; 欅田 尚樹*
Radiation Protection Dosimetry, 199(15-16), p.1807 - 1812, 2023/10
被引用回数：0 パーセンタイル：0.00(Environmental Sciences)An additional individual monitoring using ring badge must be made, when inhomogenous exposure around radiation workers' extremity were critical for radiation workers. The RPLD, the GD-302M and the GD-352M have a dimension of 13.0 mm in length and 2.8 mm in diameter for outer casing and will also be a promising candidate for individual monitoring of the extremities of medical personnel. We investigated the applicability of this commercially available RPLDs to extremity dose monitoring by performing a characterization of the dosemeters by experiments and Monte Carlo (MC) calculations. The results shows that the energy response of GD-352M fully meets the IEC requirement between 20 keV and 200 keV. We also found that no significant angular dependence of responses for each model was observed and orientation of irradiation hardly affected the response. In conclusion, we demonstrated the applicability of a small RPLD to the extremity monitoring in terms of (0.07) for medical personnel.
古渡 意彦*; 永元 啓介*; 中上 晃一*; 吉富 寛; 盛武 敬*; 欅田 尚樹*
Radiation Protection Dosimetry, 198(17), p.1303 - 1312, 2022/10
被引用回数：2 パーセンタイル：31.89(Environmental Sciences)We demonstrate a practical calibration method and its applicability for a commercially available radiophotoluminescence dosemeter (RPLD, GD-352M) to eye lens dose monitoring, by performing the calibration in accord with the ISO recommendations. The calibration was then verified through a series of experiments. For verification of the derived calibration factor (1.21 
0.04, 
= 1) of the RPLD, we performed standard irradiations in the X-ray reference fields and the mockup measurements in the actual radiation fields in a hospital. The commercially available dosemeters, DOSIRIS was also put on the ISO cylinder phantom and the RANDO phantom together with the GD-352M in the verification experiments. The personal dose equivalents 
(3) obtained from the GD-352M and those obtained from the DOSIRIS were in good agreement with each other. Our results demonstrate the proper calibration of a commercially available RPLD that is applicable to the additional monitoring of the lens of the eyes for medical personnel.
Ga
O
(x =0, 0.018)中島 多朗*; 満田 節生*; 高橋 慶一郎*; 吉冨 啓祐*; 増田 一也*; 金子 周史*; 本間 勇紀*; 小林 悟*; 北澤 英明*; 小坂 昌史*; et al.
Journal of the Physical Society of Japan, 81(9), p.094710_1 - 094710_8, 2012/09
We have investigated effects of applied uniaxial pressure (
) on magnetic phase transitions in a triangular lattice antiferromagnet CuFeO (CFO) and a slightly Ga-substituted compound CuFeGaO (CFGO) with 
= 0.018. We have performed neutron diffraction, spherical neutron polarimetry, magnetic susceptibility and pyroelectric measurements under up to 100 MPa applied on the [1
0] surfaces of the single crystal samples.
GaO ( = 0, 0.018)中島 多朗*; 満田 節生*; 高橋 慶一郎*; 吉冨 啓祐*; 増田 一也*; 金子 周史*; 本間 勇紀*; 小林 悟*; 北澤 英明*; 小坂 昌史*; et al.
Journal of the Physical Society of Japan, 81(9), p.094710_1 - 094710_8, 2012/09
被引用回数：15 パーセンタイル：63.66(Physics, Multidisciplinary)We have investigated effects of applied uniaxial pressure () on magnetic phase transitions in a triangular lattice antiferromagnet CuFeO (CFO) and a slightly Ga-substituted compound CuFeGaO (CFGO) with = 0.018 by spherical neutron polarimetry. In both of CFO and CFGO ( = 0.018), the application of significantly increases the transition temperature from the paramagnetic phase to a collinear incommensurate antiferromagnetic phase. This suggests that the application of breaks equilateral symmetry of the triangular lattice and partially relieves geometrical spin frustration, which generally suppresses long-range magnetic orderings. Thus we demonstrated that uniaxial pressure can be an effective tool to control magnetic phase transitions in frustrated magnets.
