Detector optimization for hand-held CsI(Tl)/HgI2 gamma-ray scintillation spectrometer applications

Y. J. Wang; B. E. Patt; J. S. Iwanczyk; S. R. Cherry; Y. Shao

doi:10.1109/23.506677

Detector optimization for hand-held CsI(Tl)/HgI₂ gamma-ray scintillation spectrometer applications

Y. J. Wang, B. E. Patt, J. S. Iwanczyk, S. R. Cherry, Y. Shao

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Gamma-ray spectrometers using mercuric iodide (HgI₂) photodetectors (PDs) coupled with CsI(Tl) scintillators have shown excellent energy resolutions and high detection efficiency at room temperature [1-5]. Additionally HgI₂ semiconductor PDs allow for extreme miniaturization of the detector packaging compared with photomultiplier tube (PMT) based detectors. These advantages make possible the construction of a new generation of hand-held gamma-ray spectrometers. Studies of detector optimization for this application have been undertaken. Several contact materials including hydrogel and semi-transparent metal films have been evaluated and compared for their performances and long term stability. In order to provide higher gamma-ray detection efficiency (i.e., larger scintillator volume), but without causing significant degradation of the excellent response achieved with the matched scintillator/PD interface, the scintillator/PD configuration has been studied. A Monte Carlo simulation model has been developed so that the spectral shape can be predicted for various scintillator shapes and surface treatments.

Original language	English (US)
Pages (from-to)	1277-1281
Number of pages	5
Journal	IEEE Transactions on Nuclear Science
Volume	43
Issue number	3 PART 2
DOIs	https://doi.org/10.1109/23.506677
State	Published - 1996

ASJC Scopus subject areas

Nuclear and High Energy Physics
Nuclear Energy and Engineering
Electrical and Electronic Engineering

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@article{7b480ef36e814387bb194eba4dd2cf4c,

title = "Detector optimization for hand-held CsI(Tl)/HgI2 gamma-ray scintillation spectrometer applications",

abstract = "Gamma-ray spectrometers using mercuric iodide (HgI2) photodetectors (PDs) coupled with CsI(Tl) scintillators have shown excellent energy resolutions and high detection efficiency at room temperature [1-5]. Additionally HgI2 semiconductor PDs allow for extreme miniaturization of the detector packaging compared with photomultiplier tube (PMT) based detectors. These advantages make possible the construction of a new generation of hand-held gamma-ray spectrometers. Studies of detector optimization for this application have been undertaken. Several contact materials including hydrogel and semi-transparent metal films have been evaluated and compared for their performances and long term stability. In order to provide higher gamma-ray detection efficiency (i.e., larger scintillator volume), but without causing significant degradation of the excellent response achieved with the matched scintillator/PD interface, the scintillator/PD configuration has been studied. A Monte Carlo simulation model has been developed so that the spectral shape can be predicted for various scintillator shapes and surface treatments.",

author = "Wang, {Y. J.} and Patt, {B. E.} and Iwanczyk, {J. S.} and Cherry, {S. R.} and Y. Shao",

note = "Funding Information: The research work described in this paper was supported by Department of Energy Contract DE-FG03 -94ER8 1687. The authors wish to thank Mrs. P. Russo of LANL for helpful discussions and insights about Nuclear Safeguard Applications. In addition the authors wish to acknowledge the support and helpful assistance of Ms. F. Riquelme, Ms. X. Qn, Mr. R. Koziol and Mr. J. Menjivar.",

year = "1996",

doi = "10.1109/23.506677",

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volume = "43",

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AU - Wang, Y. J.

AU - Patt, B. E.

AU - Iwanczyk, J. S.

AU - Cherry, S. R.

AU - Shao, Y.

N1 - Funding Information: The research work described in this paper was supported by Department of Energy Contract DE-FG03 -94ER8 1687. The authors wish to thank Mrs. P. Russo of LANL for helpful discussions and insights about Nuclear Safeguard Applications. In addition the authors wish to acknowledge the support and helpful assistance of Ms. F. Riquelme, Ms. X. Qn, Mr. R. Koziol and Mr. J. Menjivar.

PY - 1996

Y1 - 1996

N2 - Gamma-ray spectrometers using mercuric iodide (HgI2) photodetectors (PDs) coupled with CsI(Tl) scintillators have shown excellent energy resolutions and high detection efficiency at room temperature [1-5]. Additionally HgI2 semiconductor PDs allow for extreme miniaturization of the detector packaging compared with photomultiplier tube (PMT) based detectors. These advantages make possible the construction of a new generation of hand-held gamma-ray spectrometers. Studies of detector optimization for this application have been undertaken. Several contact materials including hydrogel and semi-transparent metal films have been evaluated and compared for their performances and long term stability. In order to provide higher gamma-ray detection efficiency (i.e., larger scintillator volume), but without causing significant degradation of the excellent response achieved with the matched scintillator/PD interface, the scintillator/PD configuration has been studied. A Monte Carlo simulation model has been developed so that the spectral shape can be predicted for various scintillator shapes and surface treatments.

AB - Gamma-ray spectrometers using mercuric iodide (HgI2) photodetectors (PDs) coupled with CsI(Tl) scintillators have shown excellent energy resolutions and high detection efficiency at room temperature [1-5]. Additionally HgI2 semiconductor PDs allow for extreme miniaturization of the detector packaging compared with photomultiplier tube (PMT) based detectors. These advantages make possible the construction of a new generation of hand-held gamma-ray spectrometers. Studies of detector optimization for this application have been undertaken. Several contact materials including hydrogel and semi-transparent metal films have been evaluated and compared for their performances and long term stability. In order to provide higher gamma-ray detection efficiency (i.e., larger scintillator volume), but without causing significant degradation of the excellent response achieved with the matched scintillator/PD interface, the scintillator/PD configuration has been studied. A Monte Carlo simulation model has been developed so that the spectral shape can be predicted for various scintillator shapes and surface treatments.

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Detector optimization for hand-held CsI(Tl)/HgI₂ gamma-ray scintillation spectrometer applications

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