Open AccessSimple dose rate measurements for a very high synchrotron X‐ray flux
Author(s) -
Liu ChiJen,
Wang ChangHai,
Wang ChengLiang,
Hwu Y.,
Lin ChienYi,
Margaritondo G.
Publication year - 2009
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049509007225
Subject(s) - monochromatic color , synchrotron radiation , synchrotron , dosimetry , flux (metallurgy) , x ray , optics , radiation , materials science , radiochemistry , chemistry , nuclear medicine , physics , medicine , metallurgy
Dose measurements based on methylene blue (MB) bleaching, widely used for ultraviolet light, can also be applied to X‐rays including very high flux levels. This method has been tested by using both MB bleaching and Fricke dosimetry for a conventional monochromatic X‐ray source and then for `white‐beam' synchrotron radiation. The results show that MB bleaching dosimetry can easily measure X‐ray doses up to at least 10 5 Gy s −1 , as long as the MB concentration is sufficiently high. This condition can be verified from the deviations from linearity of the bleaching versus exposure time.