Radiochromic film containing spiropyran dye for dosimetry of low energy X‐rays |
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| Authors: | Kenji Kinashi Yusuke Miyashita Kenji Ishida Yasukiyo Ueda |
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| Institution: | 1. Graduate School of Science and Technology, Department of Macromolecular Science and Engineering, Kyoto Institute of Technology, , Kyoto, 606‐8585 Japan;2. Graduate School of Engineering, Department of Chemical Science and Engineering, Kobe University, , Kobe, 657‐8501 Japan |
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| Abstract: | A composite film containing photochromic spiropyran dye 1 and BaFCl:Eu was developed for X‐ray dose measurement at a level of a few dozen gray (Gy). The reflectance intensity at selected wavelength, obtained from X‐radiation, can be satisfactorily related to the absorbed dose in the range of 0?30 Gy. The composite film shows significant color change in the visible region, and the sensitivity of the composite to the absorbed dose was achieved based on the high molar extinction coefficient of the photomerocyanine form of dye 1. For practical application, the photoinduced blue area indicates an X‐radiated area, and the initial pale pink area indicates an unexposed area. Copyright © 2011 John Wiley & Sons, Ltd. |
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| Keywords: | dye dosimetry photochromism radiochromic film spiropyran |
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