Optimization of pulse-height sharing for use below 150 keV in long bars of NaI(Tl)

Author

Boyle, P.J. ; Hanna, D.S. ; MacLeod, A.M.L. ; Sinclair, L.E. ; Seywerd, H.C.J. ; Saull, P.R.B.

Author_Institution

Phys. Dept., McGill Univ., Montreal, QC, Canada

fYear

2011

fDate

23-29 Oct. 2011

Firstpage

440

Lastpage

443

Abstract

In this work we present an optimization of the energy and position resolutions for use in gamma-ray interactions in a long bar of NaI(TI). This work focuses on tuning the effective optical attenuation coefficient to approximately the same length of the bar. This is achieved by altering the surface of the scintillator in a systematic manner. We present data obtained in the laboratory from measurements of eighteen bars of NaI(TI) that have been manufactured with various treatments of the surface. This process results in an improvement in position resolution by a factor of four over a polished bar with only a corresponding 20% decrease in energy resolution.

Keywords

gamma-ray detection; nuclear electronics; solid scintillation detectors; Nal(Tl); energy resolution; gamma-ray interaction; optical attenuation coefficient; position resolution; pulse-height sharing optimization; scintillator surface; Energy measurement; Image resolution; Optical imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2011 IEEE

Conference_Location

Valencia

ISSN

1082-3654

Print_ISBN

978-1-4673-0118-3

Type

conf

DOI

10.1109/NSSMIC.2011.6154535

Filename

6154535