Measurements on the spectroscopic performance of CdZnTe coplanar grid detectors

H. Yücel; E. Uyar; A. N. Esen

doi:10.1016/j.apradiso.2012.04.027

Measurements on the spectroscopic performance of CdZnTe coplanar grid detectors

H. Yücel^*
, E. Uyar
, A. N. Esen

^*Corresponding author for this work

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

4 Citations (Scopus)

Abstract

A performance study was performed for CdZnTe coplanar grid (CPG) detectors when used as γ-ray spectrometers. The detectors have the crystal volumes of 1, 1.6875 and 2.25cm ³, respectively. Time stability of each CdZnTe CPG detector was investigated in a long-term operation (time span of 0.25 to about 100h). The spectroscopic performances were measured at different bias voltages and at various photon energies ranging from 59.6keV ( ²⁴¹Am) to 1332.5keV ( ⁶⁰Co) for each detector, and evaluated by using the following parameters: energy resolution in FWHM, peak tailing in peak-to-valley (P/V) ratio and in FWHM/FW.25M ratio, and photofraction using the acquired γ-ray spectra. No polarization effect was observed in terms of count rate, energy resolution and peak centroid shift. The obtained results indicate that better time stability and excellent spectroscopic performances of the present CdZnTe CPG detectors are shown for a room temperature γ-ray spectroscopy.

Original language	English
Pages (from-to)	1608-1615
Number of pages	8
Journal	Applied Radiation and Isotopes
Volume	70
Issue number	8
DOIs	https://doi.org/10.1016/j.apradiso.2012.04.027
Publication status	Published - Aug 2012
Externally published	Yes

Funding

This work was supported under the Ankara University Scientific Research Projects , nos. DPT 2005K-120130 and BAP-11A4045001 . Authors would like to thank Prof Dr. Doğan BOR who is the director of AU-INS, emeritus Prof. Dr. H. Y. GÖKSU and emeritus Prof. Dr. Çelik TARIMCI from the AU-INS for their valuable comments.

Funders
Ankara University Scientific Research Projects

Keywords

CdZnTe
Coplanar grid
Detector
FWHM
Peak-to-valley
Spectroscopic performance

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10.1016/j.apradiso.2012.04.027

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title = "Measurements on the spectroscopic performance of CdZnTe coplanar grid detectors",

abstract = "A performance study was performed for CdZnTe coplanar grid (CPG) detectors when used as γ-ray spectrometers. The detectors have the crystal volumes of 1, 1.6875 and 2.25cm 3, respectively. Time stability of each CdZnTe CPG detector was investigated in a long-term operation (time span of 0.25 to about 100h). The spectroscopic performances were measured at different bias voltages and at various photon energies ranging from 59.6keV ( 241Am) to 1332.5keV ( 60Co) for each detector, and evaluated by using the following parameters: energy resolution in FWHM, peak tailing in peak-to-valley (P/V) ratio and in FWHM/FW.25M ratio, and photofraction using the acquired γ-ray spectra. No polarization effect was observed in terms of count rate, energy resolution and peak centroid shift. The obtained results indicate that better time stability and excellent spectroscopic performances of the present CdZnTe CPG detectors are shown for a room temperature γ-ray spectroscopy.",

keywords = "CdZnTe, Coplanar grid, Detector, FWHM, Peak-to-valley, Spectroscopic performance",

author = "H. Y{\"u}cel and E. Uyar and Esen, \{A. N.\}",

year = "2012",

month = aug,

doi = "10.1016/j.apradiso.2012.04.027",

language = "English",

volume = "70",

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journal = "Applied Radiation and Isotopes",

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T1 - Measurements on the spectroscopic performance of CdZnTe coplanar grid detectors

AU - Yücel, H.

AU - Uyar, E.

AU - Esen, A. N.

PY - 2012/8

Y1 - 2012/8

N2 - A performance study was performed for CdZnTe coplanar grid (CPG) detectors when used as γ-ray spectrometers. The detectors have the crystal volumes of 1, 1.6875 and 2.25cm 3, respectively. Time stability of each CdZnTe CPG detector was investigated in a long-term operation (time span of 0.25 to about 100h). The spectroscopic performances were measured at different bias voltages and at various photon energies ranging from 59.6keV ( 241Am) to 1332.5keV ( 60Co) for each detector, and evaluated by using the following parameters: energy resolution in FWHM, peak tailing in peak-to-valley (P/V) ratio and in FWHM/FW.25M ratio, and photofraction using the acquired γ-ray spectra. No polarization effect was observed in terms of count rate, energy resolution and peak centroid shift. The obtained results indicate that better time stability and excellent spectroscopic performances of the present CdZnTe CPG detectors are shown for a room temperature γ-ray spectroscopy.

AB - A performance study was performed for CdZnTe coplanar grid (CPG) detectors when used as γ-ray spectrometers. The detectors have the crystal volumes of 1, 1.6875 and 2.25cm 3, respectively. Time stability of each CdZnTe CPG detector was investigated in a long-term operation (time span of 0.25 to about 100h). The spectroscopic performances were measured at different bias voltages and at various photon energies ranging from 59.6keV ( 241Am) to 1332.5keV ( 60Co) for each detector, and evaluated by using the following parameters: energy resolution in FWHM, peak tailing in peak-to-valley (P/V) ratio and in FWHM/FW.25M ratio, and photofraction using the acquired γ-ray spectra. No polarization effect was observed in terms of count rate, energy resolution and peak centroid shift. The obtained results indicate that better time stability and excellent spectroscopic performances of the present CdZnTe CPG detectors are shown for a room temperature γ-ray spectroscopy.

KW - CdZnTe

KW - Coplanar grid

KW - Detector

KW - FWHM

KW - Peak-to-valley

KW - Spectroscopic performance

UR - https://www.scopus.com/pages/publications/84862693339

U2 - 10.1016/j.apradiso.2012.04.027

DO - 10.1016/j.apradiso.2012.04.027

M3 - Article

AN - SCOPUS:84862693339

SN - 0969-8043

VL - 70

SP - 1608

EP - 1615

JO - Applied Radiation and Isotopes

JF - Applied Radiation and Isotopes

IS - 8

ER -

Measurements on the spectroscopic performance of CdZnTe coplanar grid detectors

Abstract

Funding

Keywords

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