Apparatus for measuring the peak voltage applied to a radiation source

摘要: Apparatus is provided for use in detecting the input voltage applied to a radiation source operating at an unknown within given range. The apparatus includes set of absorbing filters including first filter which chemical element and second element. These elements are chosen so that exhibit different absorption characteristics adapted be positioned irradiated by with impinging upon surface each partially absorbed thereby as it passes therethrough exit therefrom attenuated radiation. A detector receives passed provides signals having magnitudes vary respectively filters. ratio determined magnitude signal varying voltage. At least one exhibits known K edge Consequently increased exceed greater attenuation characteristic extend useful range relationship