Abstract: Based on experimental data obtained with a xenon filled low energy gas scintillation proportional counter (LE-GSPC) the performance and characteristics of such detectors are discussed in the context of their spectroscopic capabilities. Measurements were made at a synchrotron radiation facility, taking advantage of the tuneability and excellent collimation of the source. The energy linearity and the associated discontinuities at the xenon absorption edges are described for the range 0.15 to 6 keV. The results relating to the energy resolution as a function of energy and the L-escape peaks are also presented. !13
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