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Title: Measurement of the photoelectron-collection efficiency in noble gases and methane
Authors: 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. 
Keywords: Photoemission; Noble gases; Methane; Electron backscattering
Issue Date: 2007
Citation: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 581:1-2 (2007) 190-193
Abstract: 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.
Rights: openAccess
Appears in Collections:FCTUC Física - Artigos em Revistas Internacionais

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