title: Simple dose rate measurements for a very high synchrotron X-ray flux.
abstract: 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.
authors.affiliation: Institute of Physics, Academia Sinica, Nankang, Taipei 115, Taiwan.
authors.forename: Chi-Jen
authors.initials: CJ
authors.lastname: Liu
authors.forename: Chang-Hai
authors.initials: CH
authors.lastname: Wang
authors.forename: Cheng-Liang
authors.initials: CL
authors.lastname: Wang
authors.forename: Y
authors.initials: Y
authors.lastname: Hwu
authors.forename: Chien-Yi
authors.initials: CY
authors.lastname: Lin
authors.forename: G
authors.initials: G
authors.lastname: Margaritondo
mesh_terms: D000465:Algorithms; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D011874:Radiometry / Q000295:instrumentation* / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D017356:Synchrotrons / Q000295:instrumentation*; D014965:X-Rays