Performance of Argon-Xenon Mixtures in a Gas Proportional Scintillation Counter...

• Author(s): Carmo, S. J. C. do ; Borges, F. I. G. M. ; Conde, C. A. N.
• Date: 2009
• Persistent ID: http://hdl.handle.net/10316/12892
• Origin: Estudo Geral - Universidade de Coimbra
• Subject(s): Argon detectors; Energy resolution; Gas detectors; Proportional gas scintillation detectors; X-ray detectors; X-ray spectroscopy; Xenon detectors
• Document Type: Article
• Language: English

Description

The performance of a gas proportional scintillation counter filled with either pure Xe or Ar-Xe mixtures is described for the 0.1-10 keV X-ray energy range. It is shown that the spectra tail distortion exhibited by Xe filled gaseous detectors for soft X-rays below 2 keV is reduced if Ar-Xe mixtures are used. The peak-to-valley ratio increases by a factor of about 2 or 3 as the Xe concentration is reduced from 100% to 5%. Moreover, the energy resolutions for such mixtures are similar to the ones for pure Xe