Gamma-ray response of a clear, crosslinked PMMA dosimeter, Radix W

Takehisa, Masaaki; Sato, Yoshishige; Sasuga, Tsuneo; Haneda, N.; Haruyama, Yasuyuki; Sunaga, H.

doi:10.1016/j.radphyschem.2006.02.002

Cited by 13 publications

(7 citation statements)

References 5 publications

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“…CTA dosimeter was also used to evaluate absorbed dose for Radix W. Radix W dosimeters are commercially manufactured by Radia Industry, Co. Ltd. (Takehisa et al, 2007). Radix W has measurable gamma-ray dose range of 0.5-150 kGy, employing different read-out wavelength of 280 and 320 nm for doses up to 8 kGy and higher, respectively (Seito et al, 2007(Seito et al, , 2009 commercially manufactured by Fuji Photo Film Co. Ltd. Absorbance at read-out wavelength of 280 nm is proportional to absorbed dose, having effective measurable dose range of 10-300 kGy (ISO/ASTM 51650, 2005).…”

Section: Methodsmentioning

confidence: 99%

Application of clear polymethylmethacrylate dosimeter Radix W to a few MeV electron in radiation processing

Seito

Ichikawa²,

Hanaya

et al. 2009

Radiation Physics and Chemistry

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Section: Methodsmentioning

confidence: 99%

Application of clear polymethylmethacrylate dosimeter Radix W to a few MeV electron in radiation processing

Seito

Ichikawa²,

Hanaya

et al. 2009

Radiation Physics and Chemistry

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“…Irradiations at dose rates of 0.4 to 10 kGy/h were done in the 2nd irradiation building capable of schedule irradiation, while those at lower dose rates were performed in the food irradiation building. The specimens were set at appropriate positions for their target dose rates based on a space dose rate map obtained by measuring using an ionization chamber and calibration using a polymethyl methacrylate (PMMA) dosimeter (Radix W) [7].…”

Section: Gamma Ray Irradiation Facilitymentioning

confidence: 99%

Gamma Ray Irradiation Effects on Optical Elements of ITER Divertor Impurity Monitor

Kitazawa

Oikawa

Ogawa

et al. 2019

Plasma and Fusion Research

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The ITER divertor impurity monitor (DIM) is a diagnostic system that directly observes 200-1000 nm light emissions from nuclear fusion plasma. Because the DIM observes a wide range of light from infrared to ultraviolet using a single optical system, high optical performance, such as spatial resolution and aberration, is required for the DIM optical elements. The DIM must be highly robust against external environmental factors, such as temperature, humidity, vibration, and magnetic field. Components having high radiation resistance must be used because of the high radiation environment in ITER. In this study, DIM optical elements installed in the interspaces and the port cells are investigated because gamma ray irradiation can impact their optical performance. The irradiation experiments were performed at QST's gamma-ray irradiation facilities in Takasaki. The attenuation of transmittance due to gamma irradiation were evaluated for silica, fluorite, and LiCaAlF 6 as the glass material in the spectrometers to be installed in the port cell. The influence of irradiation on silica polka dot beam splitters was found to be negligible; however, the transmittance of high OH concentration fibres for measuring UV light decreased significantly due to irradiation and will thus require countermeasures. The information necessary for proceeding with the ITER DIM design was obtained from these experimental results.

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“…A radiochromic dosimeter is one type of chemical dosimeter. Currently, plastic film dosimeters − and Fricke dosimeters − are known as radiochromic dosimeters. Poly(methyl methacrylate) dosimeters can be used in the high-dose region, whereas Fricke dosimeters can be used in the low-dose region.…”

Section: Introductionmentioning

confidence: 99%

Leuco-Based Composite Resin Dosimeter Film

et al. 2019

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A polystyrene (PS)-based composite resin dosimeter (CRD) film comprising 2-(phenylamino)-6-(dipentylamino)-3-methylspiro[9 H -xanthene-9,3′-phthalide] (Black305) fluoran leuco dye, cerium-doped yttrium aluminum perovskite YAlO 3 :Ce (YAP:Ce) scintillator, and 2-(4-methoxystyryl)-4,6-bis(trichloromethyl)-1,3,5-triazine (MBTT) photoacid generator was developed for the visualization of X-ray exposure doses in the range of 18–170 Gy. The color of the CRD film changed from yellow to black within this range based on the X-ray exposure dose. A CRD film based on Black305/YAP:Ce/MBTT/PS could be used to produce a dosimeter with various color change sensitivities by controlling the thermodynamic parameters of the constituent materials. A CRD film is a promising tool for measuring the X-ray exposure dose and can be used as an alternative to the existing radiochromic dosimeters.

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Gamma-ray response of a clear, crosslinked PMMA dosimeter, Radix W

Cited by 13 publications

References 5 publications

Application of clear polymethylmethacrylate dosimeter Radix W to a few MeV electron in radiation processing

Application of clear polymethylmethacrylate dosimeter Radix W to a few MeV electron in radiation processing

Gamma Ray Irradiation Effects on Optical Elements of ITER Divertor Impurity Monitor

Leuco-Based Composite Resin Dosimeter Film

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