A tunable monochromatic X-ray source for metrological studies in the 1-20 keV energy range: application to the measurement of attenuation coefficients.
A tunable monochromatic X-ray source operating in the 1-20 keV energy range is described. An X-ray tube provides initial photons. A dispersive crystal performs the energy selection, according to Bragg's law. An X-ray detector is connected to the monochromator fixed exit. This setup can be used for metrological studies. A first application consists in measuring attenuation coefficients in the 4-10 keV energy range. Results for aluminum and copper are given, with average relative uncertainties (1sigma) of 1% and 3% respectively.
Lépy
Marie-Christine
MC
BNM/Laboratoire National Henri Becquerel, CEA Saclay, Gif-Sur-Yvette Cedex F-91191, France. marie-christine.lepy@cea.fr
Ferreux
Laurent
L
Plagnard
Johann
J
D002138:Calibration / Q000592:standards*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D011829:Radiation Dosage; D011874:Radiometry / Q000295:instrumentation* / Q000379:methods / Q000592:standards*; D012015:Reference Standards; D015203:Reproducibility of Results; D012542:Scattering, Radiation; D012680:Sensitivity and Specificity; D014159:Transducers; D014965:X-Rays