Fano factor of scintillation detectors from photoelectron correlations

Author

Bousselham, Abdelkader ; Barrett, Harrison H. ; Bora, Vaibhav ; Shah, Kanai

Author_Institution

Dept. of Radiol., Univ. of Arizona, Tucson, AZ, USA

fYear

2009

fDate

Oct. 24 2009-Nov. 1 2009

Firstpage

2370

Lastpage

2373

Abstract

In this work we propose a new experimental approach to studying the statistics of the scintillation light from scintillation detectors. Two photodetectors are used for detecting the light output from the two faces of a thin scintillator crystal. From the correlation of the signals from the two photodetectors, the Fano factor F_opt of the scintillation light is determined. Data on several inorganic crystalline scintillators (CsI:Na, LaBr₃:Ce, and CdWO₄) are presented, and in LaBr₃:Ce it is observed that the correlations are negative and F_opt << 1 (sub-Poisson statistics).

Keywords

photodetectors; photoelectron spectra; photoemission; radiation detection; scintillation counters; CdWO₄; CsI:Na; Fano factor; LaBr₃:Ce; inorganic crystalline scintillators; light output; photodetectors; photoelectron correlations; scintillation detectors; scintillation light; sub-Poisson statistics; thin scintillator crystal; Crystallization; Energy measurement; Energy resolution; Face detection; Nuclear imaging; Photodetectors; Radiology; Scintillation counters; Solid scintillation detectors; Statistics; Fano factor; Photoelectron anticorrelation; sub-Poisson statistics;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE

Conference_Location

Orlando, FL

ISSN

1095-7863

Print_ISBN

978-1-4244-3961-4

Electronic_ISBN

1095-7863

Type

conf

DOI

10.1109/NSSMIC.2009.5402210

Filename

5402210