The gas proportional scintillation counter/microstrip gas chamber hybrid detect...

• Autor(es): Monteiro, C. M. B. ; Veloso, J. F. C. A. ; Freitas, D. S. A. P. ; Santos, J. M. F. dos ; Conde, C. A. N.
• Data: 2002
• Identificador Persistente: http://hdl.handle.net/10316/4014
• Origem: Estudo Geral - Universidade de Coimbra
• Assunto(s): Gas scintillation counters; CsI photocathodes
• Tipo de Documento: Artigo
• Idioma: Inglês

Descrição

We present the results of a study of an argon gas proportional scintillation counter instrumented with a CsI-coated microstrip plate placed in the argon envelope. Although the measured light amplification gain and the photoelectron collection efficiency are 70% and 30-40% higher than those obtained in a similar xenon detector, the charge gain achieved in argon for the avalanches produced by the photoelectrons at the microstrip anodes is a factor of ten lower than in xenon. In both cases, these gains are limited by optical positive feedback. The energy resolution achieved for 5.9 keV X-rays was 14.8% compared to 12% in xenon. http://www.sciencedirect.com/science/article/B6TJM-45SHB0C-3/1/2d0511e0866173bb27b1a2d57ceb55cd