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Journal Articles

Evaluation of the resistance of ${it Euglena gracilis}$ to ion beam radiation

Hayashi, Hirotaka*; Wada, Seiichi; Funayama, Tomoo; Narumi, Issei; Kobayashi, Yasuhiko; Watanabe, Hiroshi*; Furuta, Masakazu*; Uehara, Kaku*

Journal of Eukaryotic Microbiology, 51(3), p.321 - 324, 2004/06

 Times Cited Count:5 Percentile:7.23(Microbiology)

no abstracts in English

JAEA Reports

Establishment of X-ray reference fields for performance tests of radiation measuring instruments based on international standard(ISO4037-1)

Shimizu, Shigeru; Zhang, Q.; Kajimoto, Yoichi; Kawasaki, Tomokatsu; Fujii, Katsutoshi

JAERI-Tech 2003-095, 52 Pages, 2004/01

JAERI-Tech-2003-095.pdf:2.66MB

The International Standards ISO4037-1 of the International Organization for Standardization widely applied in the world to construct X-ray reference fields for performance tests of radiation measuring instruments. The application of the current JAERI's X-ray reference field constructed in accordance with the Japanese Standards should be limited for domestic purposes becase of the characterization technique different from the International Standards. Therefore,for application to international performance tests, X-ray reference fields in the narrow,wide and high air-kerma series based on the International Standards were established using the medium-hard X-ray generator of the Facility of Radiation Standards(FRS), JAERI. This report presents quality characterization, estimation of X-ray spectra of each dose units of the new FRS's fields,and comparison of the qualities and the X-ray spectra to those of the ISO's. The FRS's qualities show good agreement with ISO's: the reference fields should serve for performance tests for international radiation protection purposes.

Journal Articles

Conversion coefficients from fluence to effective dose for heavy ions with energies up to 3 GeV/A

Sato, Tatsuhiko; Tsuda, Shuichi; Sakamoto, Yukio; Yamaguchi, Yasuhiro; Niita, Koji*

Radiation Protection Dosimetry, 106(2), p.137 - 144, 2003/11

 Times Cited Count:19 Percentile:77.74(Environmental Sciences)

Radiological protection against high energy heavy ions has been an essential issue in the planning of long-term space missions. We calculated fluence to effective dose conversion coefficients for heavy ions using the Particle and Heavy Ion Transport code System PHITS coupled with an anthropomorphic phantom of the MIRD5 type. The calculations were performed for incidences of protons and typical space heavy ions with energies up to 3 GeV/A in the isotropic and anterior-posterior irradiations. Based on the results, we propose a simple fitting formula that can predict the effective dose from almost all kinds of space heavy ions below 3 GeV/A within an accuracy of 30%.

JAEA Reports

Dose coefficients for radionuclides produced in high energy proton accelerator facilities; Coefficients for radionuclides not listed in ICRP publications

Kawai, Katsuo; Endo, Akira; Noguchi, Hiroshi

JAERI-Data/Code 2002-013, 66 Pages, 2002/05

JAERI-Data-Code-2002-013.pdf:2.75MB
JAERI-Data-Code-2002-013-DoseCD.pdf:81.85MB

Effective dose coefficients by inhalation and ingestion have been calculated for 334 nuclides, including (1) nuclides with half-lives $$ge$$ 10min and their daughters that are not listed in ICRP Publications and (2) nuclides with half-lives $$<$$ 10min that are produced in a spallation target. Dose calculation was carried out using a nuclear decay database DECDC and a decay data library newly compiled from the ENSDF. The dose coefficients were calculated with the computer code DOCAP based on the respiratory tract model and biokinetic model of ICRP. The calculated results are presented as tables, which are the same forms as those in ICRP Publs.68 and 72. The complete listings of the dose coefficients are arranged on a CD-ROM, DoseCD, as indexed tables for inhalation of ten particle sizes, ingestion and injection into blood for workers and members of the public. The dose coefficients calculated in the present study are useful to calculate internal doses for a variety of radionuclides produced in high energy proton accelerator facilities.

Journal Articles

Preparation of a beam quality indicator for effective energy determinations of continuum beams; Establishment of traceability

Matsubayashi, Masahito; *; J.T.Lindsay*

Nuclear Instruments and Methods in Physics Research A, 424(1), p.165 - 171, 1999/00

 Times Cited Count:2 Percentile:28.12(Instruments & Instrumentation)

no abstracts in English

Journal Articles

Benchmark analysis of experiments in fast critical assemblies using a continuous-energy monte carlo code MVP

Nagaya, Yasunobu; Nakakawa, Masayuki; Mori, Takamasa

Journal of Nuclear Science and Technology, 35(1), p.6 - 19, 1998/01

 Times Cited Count:3 Percentile:32.94(Nuclear Science & Technology)

no abstracts in English

Journal Articles

An Attempt at standardization of neutron beam quality

Matsubayashi, Masahito; *

Dai-2-Kai Hoshasen Shimpojiumu Koen Rombunshu, p.130 - 135, 1997/10

no abstracts in English

Journal Articles

Experimental study of modification of neutron spectrum using filters

*; *; Matsubayashi, Masahito; J.S.Brenizer-Jr.*; J.T.Lindsay*

Nuclear Instruments and Methods in Physics Research A, 377, p.37 - 40, 1996/00

 Times Cited Count:7 Percentile:56.1(Instruments & Instrumentation)

no abstracts in English

Journal Articles

External doses due to terrestrial gamma rays on the snow cover

Saito, Kimiaki

Radiation Protection Dosimetry, 35(1), p.31 - 39, 1991/00

 Times Cited Count:8 Percentile:67.1(Environmental Sciences)

no abstracts in English

Journal Articles

Evaluation of delayed neutron data for thermal fission of U-235 based on integral experiments at semi-homogeneous experiment

; Akino, Fujiyoshi;

Journal of Nuclear Science and Technology, 25(9), p.673 - 681, 1988/09

 Times Cited Count:8 Percentile:65.79(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Treatment of photon energy released from a nuclide for estimation of the gamma doses due to radioactive plumes

Hidaka, Akihide;

Nihon Genshiryoku Gakkai-Shi, 29(11), p.1023 - 1029, 1987/11

no abstracts in English

Journal Articles

Energetic considerations of the vibrational potential function in the effective nuclear charge model,IV

Journal of Chemical Physics, 82(2), p.860 - 867, 1985/00

 Times Cited Count:2 Percentile:15.37(Chemistry, Physical)

no abstracts in English

JAEA Reports

Stopping Power for Ions in Solids

*

JAERI-M 83-223, 27 Pages, 1983/12

JAERI-M-83-223.pdf:1.04MB

no abstracts in English

Journal Articles

Energetic considerations of the vibrational potential function in the effective nuclear charge model II

Journal of Chemical Physics, 77(10), p.5040 - 5044, 1982/00

 Times Cited Count:10 Percentile:43.32(Chemistry, Physical)

no abstracts in English

Journal Articles

16 (Records 1-16 displayed on this page)
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