A thickness independent radiochromic film dosimetry system |
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Authors: | John D. Rickey Kent C. Humpherys |
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Affiliation: | Far West Technology, Inc. 330-D South Kellogg Ave., Goleta, California 93117, USA |
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Abstract: | A new radiochromic thin film dosimeter has been developed for use in radiation processing. The dosimeter's properties are similar to those of the commercially available FWT-60-00 Radiochromic Detectors with three key differences: 1) a lower sensitivity allows reading the optical density at the peak of the absorbtion spectrum (ca. 600 nm) for absorbed doses to over 50 kGy, 2) a radiation-insensitive dye additive allows for automatic thickness correction, and 3) another additive extends to higher doses the agreement between gamma and E-beam calibrations. The dosimeter is analyzed for its sensitivity, temperature and humidity dependencies, stability, reproducibility, and agreement of gamma and E-beam calibrations. |
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Keywords: | absorbed dose dosimetry electron beam gamma radiation ionizing radiation quality control radiation processing radiochromic dosimetry radiochromic film |
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