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Journal Articles

Dyed Polyvinyl Chloride films for use as high-dose routine dosimeters in radiation processing

Mai, H. H.*; Duong, N. D.*; Kojima, Takuji

Radiation Physics and Chemistry, 69(5), p.439 - 444, 2004/04

https://doi.org/10.1016/j.radphyschem.2003.08.006
 Times Cited Count：21 Percentile：77.76(Chemistry, Physical)

Characteristics of the polyvinyl chloride films containing 0.11wt% of malachite green oxalate or 6GX-setoglausine with 100$$mu$$m in thickness were studied for use as routine dosimeters in radiation processing. These films show basically color bleaching under $$^{60}$$Co $$gamma$$-ray irradiation in a dose range of 5 to 50 kGy. The sensitivity of the dosimeters and the linearity of dose response curves are improved by adding 2.5% of chloral hydrate [CCl$$_3$$CH(OH)$$_2$$] and 0.15% hydroquinone [HOC$$_6$$H$$_4$$OH]. These additions extent the minimum dose limit to 1 kGy covering dosimetric quality assurance in radiation processing of food and healthcare products. The dose responses of both films at irradiation temperatures of 20-35$$^{circ}$$C are constant relative to those at 25$$^{circ}$$C, and the irradiation temperature coefficients for 35-55$$^{circ}$$C were estimated to be (0.43 $$pm$$ 0.01)%/ $$^{circ}$$C. The dosimeter characteristics are stable within 1% at 25$$^{circ}$$C before and 60 days after irradiation.

JAEA Reports

Control rod position and temperature coefficients in HTTR power-rise tests; Interim report

Fujimoto, Nozomu; Nojiri, Naoki; Takada, Eiji*; Saito, Kenji; Kobayashi, Shoichi; Sawahata, Hiroaki; Kokusen, Shigeru

JAERI-Tech 2000-091, 49 Pages, 2001/03

JAERI-Tech-2000-091.pdf:2.0MB

no abstracts in English

Journal Articles

Effects of temperature during irradiation and spectrophotometry analysis on the dose response of aqueous dichromate dosimeters

H.H.Mai*; Tachibana, Hiroyuki; Kojima, Takuji

Radiation Physics and Chemistry, 53(1), p.85 - 91, 1998/00

https://doi.org/10.1016/S0969-806X(97)00295-8
 Times Cited Count：5 Percentile：44.25(Chemistry, Physical)

no abstracts in English

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