Suitability of high-pressure xenon as scintillator for gamma ray   spectroscopy
  In this paper we report the experimental study of high-pressure xenon used as a scintillator, in the context of developing a gamma ray detector. We measure a light yield near 2 photoelectrons per keV for xenon at 40 bar. Together with the light yield, we also measured an energy resolution of ~9% (FWHM) at 662 keV, dominated by the statistical fluctuations in the number of photoelectrons. 
F. Resnati, U. Gendotti, R. Chandra, A. Curioni, G. Davatz, H.   Frederich, A. Gendotti, L. Goeltl, R. Jebali, D. Murer, A. ...
physics.ins-det nucl-ex