Comparative measurements on LaBr 3(Ce) and LaCl 3(Ce) scintillators coupled to PSPMT

Won Ho Lee, David K. Wehe, Byoungjik Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

We present the results of energy resolution measurements at 662 keV for a LaBr 3 crystal (3.67%) and a 6×6 array of LaCl 3 crystals (4.65%) coupled to a 5" diameter Hamamatsu PSPMT, and compare them to measurements on arrays of NaI (7.37%) and BGO (16.07%). The raw spectra obtained using the full PSPMT area were less impressive due to the well-known position-dependent sensitivity of the PSPMT. The raw energy resolution of the total area of LaCl 3 without collimation is poor (13%) but it is much improved by position dependent gain correction (5.85%).To avoid this complication, the spectra were acquired using a well-collimated source focused upon a small area of the detector. 2D flood-field radiation images from those scintillators were also obtained. The position distortion due to the light spreading in the scintillator and the non-uniformity of the PSPMT were corrected by several methods. Gaussian fitting was found to be superior to other methods but at the expense of increased processing time.

Original languageEnglish
Title of host publicationIEEE Nuclear Science Symposium Conference Record
EditorsJ.A. Seibert
Pages861-864
Number of pages4
Volume2
Publication statusPublished - 2004
Externally publishedYes
Event2004 Nuclear Science Symposium, Medical Imaging Conference, Symposium on Nuclear Power Systems and the 14th International Workshop on Room Temperature Semiconductor X- and Gamma- Ray Detectors - Rome, Italy
Duration: 2004 Oct 162004 Oct 22

Other

Other2004 Nuclear Science Symposium, Medical Imaging Conference, Symposium on Nuclear Power Systems and the 14th International Workshop on Room Temperature Semiconductor X- and Gamma- Ray Detectors
CountryItaly
CityRome
Period04/10/1604/10/22

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Industrial and Manufacturing Engineering

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  • Cite this

    Lee, W. H., Wehe, D. K., & Kim, B. (2004). Comparative measurements on LaBr 3(Ce) and LaCl 3(Ce) scintillators coupled to PSPMT In J. A. Seibert (Ed.), IEEE Nuclear Science Symposium Conference Record (Vol. 2, pp. 861-864)