Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Furuta, Takuya; Hashimoto, Shintaro; Ogawa, Tatsuhiko; Tanimura, Yoshihiko
Nuclear Instruments and Methods in Physics Research A, 1086, p.171320_1 - 171320_8, 2026/06
Times Cited Count：0 Percentile：0.00(Instruments & Instrumentation)A new function to incorporate nuclear data libraries with outgoing particles plus residual nuclei in specific excitation states for neutron-induced reactions has been implemented in a Monte Carlo simulation code, Particle and Heavy Ion Transport code System (PHITS). With this function, accurate predictions of outgoing particle spectra and angular distributions according to the nuclear data libraries become possible, while accounting for production of residual nuclei and de-excitation gammas, conserving total energy and momentum in each event. This feature allows users to perform high-precision simulations of detector responses and radiation damage in materials.
Ba 
-ray calibration field for photon energy in the 300-400 keV rangeTsuji, Tomoya; Yoshitomi, Hiroshi; Kowatari, Munehiko*; Sato, Fuminobu*; Tanimura, Yoshihiko
Radiation Protection Dosimetry, 202(8), p.619 - 630, 2026/05
Times Cited Count：0 Percentile：0.00(Environmental Sciences)Tsuji, Tomoya; Yoshitomi, Hiroshi; Sato, Fuminobu*; Tanimura, Yoshihiko
Radioisotopes, 75(S-01), p.S-004_1 - S-004_6, 2026/04
Tanimura, Yoshihiko
Hokeikyo Nyusu, (76), p.2 - 6, 2025/10
no abstracts in English
Tsuji, Tomoya; Yoshitomi, Hiroshi; Nishino, Sho; Sato, Fuminobu*; Tanimura, Yoshihiko
Journal of Radiological Protection, 45(3), p.031519_1 - 031519_8, 2025/09
Times Cited Count：0 Percentile：0.00(Environmental Sciences)Tsuji, Tomoya; Yoshitomi, Hiroshi; Sato, Fuminobu*; Tanimura, Yoshihiko
Radiation Protection Dosimetry, 201(9), p.648 - 662, 2025/06
Times Cited Count：3 Percentile：65.74(Environmental Sciences)Kowatari, Munehiko*; Yoshitomi, Hiroshi; Tani, Kotaro*; Tanimura, Yoshihiko; Kurihara, Osamu*
Radiation Protection Dosimetry, 200(16-18), p.1574 - 1579, 2024/11
Times Cited Count：0 Percentile：0.00(Environmental Sciences)Ishii, Junya*; Shimizu, Morihito*; Kato, Masahiro*; Kurosawa, Tadahiro*; Tsuji, Tomoya; Yoshitomi, Hiroshi; Tanimura, Yoshihiko; Watabe, Hiroshi*
Journal of Radiological Protection, 44(3), p.031516_1 - 031516_8, 2024/09
Times Cited Count：0 Percentile：0.00(Environmental Sciences)
Am gamma calibration field based on international standards and its conversion coefficientsTsuji, Tomoya; Yoshitomi, Hiroshi; Kowatari, Munehiko*; Tanimura, Yoshihiko
Radiation Protection Dosimetry, 200(15), p.1416 - 1424, 2024/09
Times Cited Count：5 Percentile：62.23(Environmental Sciences)Tanimura, Yoshihiko; Yoshitomi, Hiroshi; Nishino, Sho; Tsuji, Tomoya; Fukami, Tomoyo; Shinozuka, Tomoki; Oishi, Kohei; Ishii, Masato; Takamiya, Kei; Onuki, Takaya; et al.
Radiation Measurements, 176, p.107196_1 - 107196_6, 2024/08
Times Cited Count：1 Percentile：18.09(Nuclear Science & Technology)The ICRU has proposed to change the definitions of the operational quantities used for the area and individual monitoring for external exposure in the ICRU Report 95. As introducing the new operational quantities into the radiation monitoring may affect the dose assessment results using the present personal dosimeters, it is necessary to characterize the energy spectrum in the workplace and the energy dependency of the dosimeters to be used. In this work the photon spectra were measured using a NaI(Tl) scintillation detector or a LaBr
(Ce) scintillation detector at the workplaces in the Japanese Research Reactor No.3 (JRR-3) and the Japan Proton Accelerator Research Complex (J-PARC) at Japan Atomic Energy Agency (JAEA). Then the present and new operational quantities were evaluated using the above mention spectra at the workplaces and compared each other.
Tanimura, Yoshihiko; Yoshitomi, Hiroshi
Nihon Genshiryoku Gakkai-Shi ATOMO
, 66(1), p.42 - 45, 2024/01
no abstracts in English
Yokoyama, Sumi*; Tatsuzaki, Hideo*; Tanimura, Yoshihiko; Yoshitomi, Hiroshi; Hirao, Shigekazu*; Aoki, Katsunori; Tachiki, Shuichi*; Ezaki, Iwao*; Hoshi, Katsuya; Tsujimura, Norio
Journal of Radiological Protection, 42(3), p.031504_1 - 031504_17, 2022/09
Times Cited Count：3 Percentile：29.23(Environmental Sciences)In Japan, the radiation-dose limit for the lens of the eye was revised in April 2021. Consequently, for workers, the numerical values of the equivalent dose to the lens of the eye are equal to those of the effective dose. Radiation workers, radiation safety officers and licensees must comply with regulations related to radiation protection and optimize protection. The new guidelines on dose monitoring of the lens of the eye developed by the Japan Health Physics Society recommend for the dose to be estimated near the eye for accurate estimation, when the dose to the lens approaches or exceeds the management criteria. However, there is limited information regarding the non-uniform exposure of nuclear power plant workers. In this study, the dose equivalents of high-dose-rate workplaces and the personal doses of 88 workers were estimated at four Japanese commercial nuclear power plant sites (RWR: 3 units and BWR: 3 units) and the dose to the lens of the eye and the exposure situations of the workers were analyzed.
Tanimura, Yoshihiko
FBNews, (548), p.1 - 5, 2022/08
In the situation of a severe nuclear accident, radioiodine monitoring in thyroid should be performed for a large number of people immediately after accident. The portable thyroid dose monitoring system with the radiation shield which can be used in a high dose rate condition has been developed. In this paper, the outline of the monitoring system and the performance test results using the system will be described.
Kowatari, Munehiko*; Nagamoto, Keisuke*; Nakagami, Koichi*; Tanimura, Yoshihiko; Moritake, Takashi*; Kunugita, Naoki*
Journal of Radiation Protection and Research, 47(1), p.39 - 49, 2022/03
Kowatari, Munehiko; Tanimura, Yoshihiko; Kessler, P.*; Neumaier, S.*; R
ttger, A.*
Radioisotopes, 70(1), p.1 - 18, 2021/01
Sr+Y beta field; Full-face mask respirator shielding and dosemeter positioningTsujimura, Norio; Hoshi, Katsuya; Yamazaki, Takumi; Momose, Takumaro; Aoki, Katsunori; Yoshitomi, Hiroshi; Tanimura, Yoshihiko; Yokoyama, Sumi*
KEK Proceedings 2020-5, p.21 - 28, 2020/11
scintillation spectrometer due to terrestrial gamma ray components; Application in environmental radiation monitoringKowatari, Munehiko; Tanimura, Yoshihiko; Kessler, P.*; Rttger, A.*
Radiation Measurements, 138, p.106431_1 - 106431_6, 2020/11
Times Cited Count：1 Percentile：6.83(Nuclear Science & Technology)Yokoyama, Sumi*; Ezaki, Iwao*; Tatsuzaki, Hideo*; Tachiki, Shuichi*; Hirao, Shigekazu*; Aoki, Katsunori; Tanimura, Yoshihiko; Hoshi, Katsuya; Yoshitomi, Hiroshi; Tsujimura, Norio
Radiation Measurements, 138, p.106399_1 - 106399_5, 2020/11
Times Cited Count：4 Percentile：29.02(Nuclear Science & Technology)Tanimura, Yoshihiko; Yoshitomi, Hiroshi; Nishino, Sho; Takahashi, Masa
Radiation Measurements, 137, p.106389_1 - 106389_5, 2020/09
Times Cited Count：0 Percentile：0.00(Nuclear Science & Technology)A portable thyroid dose monitoring system has been developed at the Japan Atomic Energy Agency (JAEA) to assess the thyroid equivalent dose for workers and members of the public in a high dose rate environment. The background (B.G.) photon correction is required for an accurate measurement in a high dose rate environment at an early stage after a nuclear accident. We developed the B.G. photon correction method using cylindrical PMMA phantoms.
Tsujimura, Norio; Hoshi, Katsuya; Aoki, Katsunori; Yoshitomi, Hiroshi; Tanimura, Yoshihiko; Yokoyama, Sumi*
Radiation Measurements, 134, p.106305_1 - 106305_5, 2020/06
Times Cited Count：4 Percentile：29.02(Nuclear Science & Technology)