Measurements of NaI(Tl) electron response: comparison of different samples

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This paper measures the sample to sample variation in the light yield proportionality of NaI(Tl), and so explores whether this is an invariant characteristic of the material or whether it depends on the chemical and physical properties of the tested samples. We report on the electron response of nine crystals of NaI(Tl), differing in shape, volume, age, manufacturer and quality. The proportionality has been measured at the SLYNCI facility in the energy range between 3.5 to 460 keV. We observe that while samples produced by the same manufacturer at approximately the same time have virtually identical electron response curves, there ... continued below

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Hull, Giulia; Choong, Woon-Seng; Moses, William W.; Bizarri, Gregory; Valentine, John D.; Payne, Stephen A. et al. December 10, 2008.

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This paper measures the sample to sample variation in the light yield proportionality of NaI(Tl), and so explores whether this is an invariant characteristic of the material or whether it depends on the chemical and physical properties of the tested samples. We report on the electron response of nine crystals of NaI(Tl), differing in shape, volume, age, manufacturer and quality. The proportionality has been measured at the SLYNCI facility in the energy range between 3.5 to 460 keV. We observe that while samples produced by the same manufacturer at approximately the same time have virtually identical electron response curves, there are significant sample to sample variations among crystals produced by different manufacturers or at different times. In an effort to correlate changes in the electron response with details of the scintillation mechanism, we characterized other scintillation properties, including the gamma response and the x-ray excited emission spectra and decay times, for the nine crystals. While sample to sample differences in these crystals were observed, we have been unable to identify the underlying fundamental mechanisms that are responsible for these differences.

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  • Journal Name: IEEE Transactions on Nuclear Science; Journal Volume: NS-26; Related Information: Journal Publication Date: 2009

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  • Report No.: LBNL-2250E
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 966118
  • Archival Resource Key: ark:/67531/metadc934699

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  • December 10, 2008

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  • Nov. 13, 2016, 7:26 p.m.

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  • Nov. 18, 2016, 4:21 p.m.

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Hull, Giulia; Choong, Woon-Seng; Moses, William W.; Bizarri, Gregory; Valentine, John D.; Payne, Stephen A. et al. Measurements of NaI(Tl) electron response: comparison of different samples, article, December 10, 2008; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc934699/: accessed August 14, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.