Measurements of photoelectron extraction efficiency from CsI into mixtures of Ne with CH4, CF4, CO2 and N-2

• Type: Article in International Scientific Journal
• Date: 2009

Authors

Escada, J (Author) Other; Coelho, LCC (Author) Other; Dias, THVT (Author) Other; Lopes, JAM (Author) Other; dos Santos, JMF (Author) Other; Breskin, A (Author) Other

Journal

Title: Journal of Instrumentation

Vol. 4

Pages: 1-9

ISSN: 1748-0221

Publisher: Institute of Physics Publishing

Indexing

ISI Web of Knowledge - 17 Citations

Scopus - 6 Citations

Other information

Authenticus ID: P-003-ER8

DOI: 10.1088/1748-0221/4/11/p11025

Abstract (EN): Experimental measurements of the extraction efficiency f of the UV-induced photoelectrons emitted from a CsI photocathode into gas mixtures of Ne with CH4, CF4, CO2 and N-2 are presented; they are compared with model-simulation results. Backscattering of low-energy photoelectrons emitted into noble gas is significantly reduced by the admixture of molecular gases, with direct impact on the effective quantum efficiency. Data are provided on the dependence of f on the type and concentration of the molecular gas in the mixtures and on the electric field.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10