Improved quantitative gamma-ray spectroscopy using a standard 3 inch NaI detector

Author

Meng, L.J. ; Ramsden, D.

Author_Institution

Dept. of Phys. & Astron., Southampton Univ., UK

Volume

1

fYear

2000

fDate

2000

Abstract

Recent developments in the application of maximum likelihood expectation maximisation (MLEM) techniques to the deconvolution of low-resolution gamma-ray spectra have demonstrated a substantial improvement in both the energy-resolution and sensitivity achievable with the industry-standard 3" NaI scintillation counter. This technique can be used to determine the specific activities of the radioisotopes present in low-activity materials. In this paper, a practical application of this method for measuring the cement content of concrete in real-time is presented. However, the technique can be applied in many other fields

Keywords

cements (building materials); concrete; deconvolution; gamma-ray detection; gamma-ray spectroscopy; maximum likelihood estimation; solid scintillation detectors; 3 inch; NaI; NaI detector; cement content; concrete; deconvolution; energy-resolution; improved quantitative gamma-ray spectroscopy; low-activity materials; low-resolution gamma-ray spectra; maximum likelihood expectation maximisation; radioisotopes; scintillation counter; sensitivity; specific activities; Aggregates; Astronomy; Concrete; Energy measurement; Energy resolution; Extraterrestrial measurements; Gamma ray detection; Gamma ray detectors; Physics; Spectroscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2000 IEEE

Conference_Location

Lyon

ISSN

1082-3654

Print_ISBN

0-7803-6503-8

Type

conf

DOI

10.1109/NSSMIC.2000.949206

Filename

949206