Abstract
A method of low-energy γ-spectroscopy is described which employs a xenonfilled proportional counter and a NaI scintillation counter. The xenon counter is placed in the gamma flux while the scintillator counts the xenon fluorescence X rays which follow photoelectric absorption of γ rays in the proportional counter. A pulse from the proportional counter is passed to the kicksorter only when the scintillator receives a xenon K X ray. The recorded spectrum thus contain only K X ray escape peaks and is easy to interpret. The method is described in detail and a practical example is given. A possible extension of the method to conversion-electron spectroscopy is proposed.
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