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

• Tipo: Artigo em Revista Científica Internacional
• Data: 2009

Autores

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

Revista

Título: Journal of Instrumentation

Vol. 4

Páginas: 1-9

ISSN: 1748-0221

Editora: Institute of Physics Publishing

Indexação

ISI Web of Knowledge - 17 Citações

Scopus - 6 Citações

Outras Informações

ID Authenticus: 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 10