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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：53.91(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：13 パーセンタイル：63.29(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.
