Short induction gap gas electron multiplier (GEM) for X-ray spectroscopy

• Author(s): Mir, J. A. ; Stephenson, R. ; Rhodes, N. J. ; Schooneveld, E. M. ; Veloso, J. F. C. A. ; Santos, J. M. F. dos
• Date: 2007
• Persistent ID: http://hdl.handle.net/10316/4378
• Origin: Estudo Geral - Universidade de Coimbra
• Subject(s): Gas Electron Multiplier; Effective gain; X-ray energy resolution
• Document Type: Article
• Language: English

Description

Experimental work was carried out to evaluate the performance of a Gas Electron Multiplier (GEM) operated with a micromesh readout plane that enabled the induction gap to be set at 50 [mu]m. We measured the essential operational parameters of this system using Ar(75%)-isobutane (25%) as the counter gas mixture. The measurements included the effective gain, effective gain stability, and the X-ray energy resolution using a 5.89 keV X-ray source. These studies demonstrated several advantages of the current system when compared with the standard operation, such as lower operational voltages, higher effective gains and improved effective gain stability. http://www.sciencedirect.com/science/article/B6TJM-4MCW7M1-F/1/f0700659b4d61e87ecd815040c63b24a