Measurement of the photoelectron-collection efficiency in noble gases and methane

• Author(s): Coelho, L. C. C. ; Ferreira, H. M. N. B. L. ; Lopes, J. A. M. ; Dias, T. H. V. T. ; Ferreira, L. F. R. ; Santos, J. M. F. dos ; Breskin, A. ; Chechik, R.
• Date: 2007
• Persistent ID: http://hdl.handle.net/10316/4346
• Origin: Estudo Geral - Universidade de Coimbra
• Subject(s): Photoemission; Noble gases; Methane; Electron backscattering
• Document Type: Article
• Language: English

Description

The photoelectron-collection efficiency from photocathodes in noble gases and methane is experimentally investigated. The ratio between the number of transmitted photoelectrons in the gas media and in vacuum is determined as a function of the applied reduced electric field E/p, where p is the gas pressure. Results are presented for He, Ne, Ar, Xe, Kr and CH4. http://www.sciencedirect.com/science/article/B6TJM-4P9F3BS-6/1/8f6c11acb4868756b0727307ee511aea