Source-to-detector Distance Dependence of Efficiency and Energy Resolution of a 3"x3" NaI(Tl) Detector

Year 2018, Issue: 13, 103 - 107, 31.08.2018

Urkiye Akar Tarım , Orhan Gürler

https://doi.org/10.31590/ejosat.443565

Cited By: 7

Abstract

NaI(Tl) scintillation detectors are widely used in measurements of environmental radioactivity, low level radioactive waste, prompt
gamma ray neutron activation analysis, some nuclear physics experiments, geology, etc. This paper reports the results of the energy
calibration, resolution and full energy peak efficiency and total efficiency calculations for a 3"x3" NaI(Tl) detector (Canberra Inc.) that
are essential to specify the quality of the results of gamma spectrometry measurements. To investigate the effects of the gamma ray
energy and the distance from source to detector center on detector efficiency, measurements were performed at different six axial
distances for four point sources (Am-241, Cs-137, Co-60 and Na-22). Thus, fundamental data for further works with this detector system
were obtained.

Keywords

Gamma ray, NaI(Tl), Full energy peak efficiency, Total efficiency, Resolution

Supporting Institution

The Commission of Scientific Research Projects of Uludag University

Project Number

OUAP(F)-2016/10

Thanks

This work was supported by The Commission of Scientific Research Projects of Uludag University, Project number: OUAP(F)-2016/10.

Source-to-detector Distance Dependence of Efficiency and Energy Resolution of a 3"x3" NaI(Tl) Detector

Abstract

NaI(Tl) scintillation detectors are widely used in measurements of environmental radioactivity, low level radioactive waste, prompt gamma ray neutron activation analysis, some nuclear physics experiments, geology, etc. This paper reports the results of the energy calibration, resolution and full energy peak efficiency and total efficiency calculations for a 3"x3" NaI(Tl) detector (Canberra Inc.) that are essential to specify the quality of the results of gamma spectrometry measurements. To investigate the effects of the gamma ray energy and the distance from source to detector center on detector efficiency, measurements were performed at different six axial distances for four point sources (Am-241, Cs-137, Co-60 and Na-22). Thus, fundamental data for further works with this detector system were obtained.

Keywords

Gamma ray, NaI(Tl), Full energy peak efficiency, Total efficiency

Project Number

OUAP(F)-2016/10

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