Evaluation of a ferrous benzoic xylenol orange transparent PVA cryogel radiochromic dosimeter

Evaluation of a ferrous benzoic xylenol orange transparent PVA cryogel radiochromic dosimeter

A stable cryogel dosimeter was prepared using ferrous benzoic xylenol orange (FBX) in a transparent poly-(vinyl alcohol) (PVA) cryogel matrix. Dose response was evaluated for different numbers of freeze-thaw cycles (FTCs), different concentrations of PVA, and ratios of water dimethyl sulfoxide. Line...

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Veröffentlicht in:Physics in medicine & biology 2014-04, Vol.59 (7), p.1773-1787
Hauptverfasser: Eyadeh, Molham M, Farrell, Thomas J, Diamond, Kevin R
Format: Artikel
Sprache:eng
Schlagworte:
absorbance
Benzoic Acid - chemistry
cryogel
Cryogels - chemistry
Ferrous Compounds - chemistry
gel dosimeter
Phenols - chemistry
Polyvinyl Alcohol - chemistry
PVA
radiation dosimetry
Radiometry - methods
Sulfoxides - chemistry
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container_title Physics in medicine & biology
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creator Eyadeh, Molham M
Farrell, Thomas J
Diamond, Kevin R
description A stable cryogel dosimeter was prepared using ferrous benzoic xylenol orange (FBX) in a transparent poly-(vinyl alcohol) (PVA) cryogel matrix. Dose response was evaluated for different numbers of freeze-thaw cycles (FTCs), different concentrations of PVA, and ratios of water dimethyl sulfoxide. Linear relationships between dose and absorbance were obtained in the range of 0-1000 cGy for all formulations. Increasing the concentration of PVA and number of FTCs resulted in increased absorbance and sensitivity. The effects of energy and dose rate were also evaluated. No significant dose rate dependence was observed over the range 1.05 to 6.33 Gy min−1. No energy response was observed over photon energies of 6, 10, and 18 MV.
doi_str_mv 10.1088/0031-9155/59/7/1773
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Dose response was evaluated for different numbers of freeze-thaw cycles (FTCs), different concentrations of PVA, and ratios of water dimethyl sulfoxide. Linear relationships between dose and absorbance were obtained in the range of 0-1000 cGy for all formulations. Increasing the concentration of PVA and number of FTCs resulted in increased absorbance and sensitivity. The effects of energy and dose rate were also evaluated. No significant dose rate dependence was observed over the range 1.05 to 6.33 Gy min−1. 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subjects absorbance
Benzoic Acid - chemistry
cryogel
Cryogels - chemistry
Ferrous Compounds - chemistry
gel dosimeter
Phenols - chemistry
Polyvinyl Alcohol - chemistry
PVA
radiation dosimetry
Radiometry - methods
Sulfoxides - chemistry
title Evaluation of a ferrous benzoic xylenol orange transparent PVA cryogel radiochromic dosimeter
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