Spectroscopic response of a CdZnTe multiple electrode detector

Abbene, L.; Sordo, S. Del; Fauci, F.; Gerardi, G.; Manna, A. La; Raso, G.; Cola, A.; Perillo, E.; Raulo, A.; Gostilo, V.; Stumbo, S.

doi:10.1016/j.nima.2007.09.015

Cited by 41 publications

(16 citation statements)

References 21 publications

(18 reference statements)

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“…The detector exhibited good stability in a long-term operation (time span of about six hours) at the working temperature of -5 °C, as pointed out in our previous study [19].…”

Section: Measurements For the 09-mm Thick Detector (Czt1)supporting

confidence: 77%

“…The measurements were performed at low temperatures (-5 °C; -10 °C). The spectroscopic performances of the detectors were analyzed by evaluating the following parameters in the measured spectra: energy resolution, photofraction, peak-to-valley ratio and FW.1M/FWHM, defined in our previous work [19]. The measured spectra were analyzed by using a peak function model, which takes into account both the symmetric and asymmetric peak distortion effects [20].…”

Section: The Detectors and Operationmentioning

confidence: 99%

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Study of the spectral response of CZT multiple-electrode detectors

Abbene¹,

Sordo

Fauci

et al. 2007

2007 IEEE Nuclear Science Symposium Conference Record

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“…The detector exhibited good stability in a long-term operation (time span of about six hours) at the working temperature of -5 °C, as pointed out in our previous study [19].…”

Section: Measurements For the 09-mm Thick Detector (Czt1)supporting

confidence: 77%

Section: The Detectors and Operationmentioning

confidence: 99%

Study of the spectral response of CZT multiple-electrode detectors

Abbene¹,

Sordo

Fauci

et al. 2007

2007 IEEE Nuclear Science Symposium Conference Record

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“…Although, there exist different designs of CZT detectors that aim to minimize the second contribution, such as co-planar grid, steering grid, pixelated and strip designs 12 , the incomplete charge collection remains a problem for medium to large volume CZT detectors. However, the influence of electronic contribution to the peak asymmetry can be minimized by choosing an appropriate pulse shaping time constant and by operating the detector at the high-voltage bias 13 recommended by the manufacturer.…”

Section: A Methodologymentioning

confidence: 99%

Instrumentation effects on U and Pu CBNM standards spectra quality measured on a 500 mm³CdZnTe and a 2×2 inch LaBr₃detectors

et al. 2018

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Abstract-Nowadays, there is interest in developing gammaray measuring devices based on the room temperature operated medium resolution detectors such as semiconductor detectors of the CdZnTe type and scintillators of the LaBr3 type. This is true also for safeguards applications and the International Atomic Energy Agency (IAEA) has launched a project devoted to the assessment of medium resolution gamma-ray spectroscopy for the verification of the isotopic composition of U and Pu bearing samples. This project is carried out within the Non-Destructive Assay Working Group of the European Safeguards Research and Development Association (ESARDA). In this study we analyze medium resolution spectra of U and Pu standards with the aim to develop an isotopic composition determination algorithm, particularly suited for these types of detectors. We show how the peak shape of a CdZnTe detector is influenced by the instrumentation parameters. The experimental setup consisted of a 500 mm 3 CdZnTe detector, a 2x2 inch LaBr3 detector, two types of measurement instrumentation -an analogue one and a digital one, and a set of certified samples -a 207 Bi point source and U and Pu CBNM standards. The results of our measurements indicate that the lowest contribution to the peak asymmetry and thus the smallest impact on the resolution of the 500 mm 3 CdZnTe detector was achieved with the digital MCA. Analysis of acquired spectra allowed to reject poor quality measurement runs and produce summed spectra files with the least impact of instrumentation instabilities. This work is preliminary to further studies concerning the development of an isotopic composition determination algorithm particularly suited for CZT and LaBr3 detectors for safeguards applications.

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“…Thus, a much better way has been found to deal with the hole trapping issue in room temperature semiconductor detectors which utilize electrons' sensing by making suitable anode electrode designs such as pixels, strips, coplanar grids, steering grids, etc. (Abbene et al, 2007). Additionally, several other methods such as hemi-spherical detectors, parallel Frisch grid detectors, capacitive Frisch grid detectors and so on have also been studied to make use of singlepolarity charge sensing but with the limited success when compared to the coplanar grid and pixelated anode structure designs.…”

Section: Introductionmentioning

confidence: 99%

“…In past, spectrometric responses of a CdZnTe multiple electrode detectors were studied (Abbene et al, 2007) and similarly spectrometric performance of CdZnTe ring detectors was also investigated (Bulycheva et al, 2011). The purpose of this study is to investigate the spectroscopic responses of CdZnTe coplanar grid detectors used as g-ray spectrometers.…”

Section: Introductionmentioning

confidence: 99%