Photoelectron collection efficiency in Xe-CF4 mixtures

Author

Escada, J. ; Rachinhas, P.J.B.M. ; Dias, T.H.V.T. ; Lopes, J.A.M. ; Santos, F.P. ; Conde, C.A.N. ; Stauffer, A.D.

Author_Institution

Univ. de Coimbra, Coimbra

Volume

1

fYear

2007

fDate

Oct. 26 2007-Nov. 3 2007

Firstpage

585

Lastpage

589

Abstract

A Monte Carlo simulation is used to study electron drift parameters in CF₄ and Xe-CF₄ mixtures as well as the collection efficiency f for photoelectrons emitted from a Csl photocathode into these gases. The present calculations take into account superelastic collisions of the electrons with CF₄ molecules thermally excited to vibrational modes, and results are compared with earlier results where the effect was neglected. The data for f is also compared with previous results in CH₄ and Xe-CH₄. The simulation examines the dependence of f on the reduced electric field E/N, incident photon energy E_ph and mixture composition.

Keywords

Monte Carlo methods; drift chambers; gas scintillation detectors; ionisation chambers; Csl photocathode; Monte Carlo simulation; Xe; electric field; electron drift parameters; electron superelastic collisions; gas mixtures; photoelectron collection efficiency; photon energy; vibrational modes; Cathodes; Electromagnetic scattering; Electron emission; Electron mobility; Gases; Instruments; Ionization; Nuclear and plasma sciences; Particle scattering; Scattering parameters;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2007. NSS '07. IEEE

Conference_Location

Honolulu, HI

ISSN

1095-7863

Print_ISBN

978-1-4244-0922-8

Electronic_ISBN

1095-7863

Type

conf

DOI

10.1109/NSSMIC.2007.4436400

Filename

4436400