Cadmium zinc telluride spectral modeling

Dardenne, Y. X.; Wang, T.F.; Lavietes, Anthony D.; Mauger, G.J.; Ruhter, W.D.; Kreek, S. A.

doi:10.1016/s0168-9002(98)00947-4

Cited by 11 publications

(2 citation statements)

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“…This can be explained by the fact that the effective volume of the detector is smaller than the nominal 500 mm 3 . In addition, the non-uniform electric field 5 and the fact that the detection probability is a function of the position inside the detector 5,6,16,17 cannot be accounted for in a straightforward way in the simulations. These phenomena affect the observed deposited energy in the detector and explain the observed peak shape.…”

Section: Efficiencymentioning

confidence: 99%

“…4 Due to mechanisms related to the charge transport in the crystal, their peak shape exhibits a low energy tail. 5,6 Since they do not require cooling, CZT detectors are portable and are used for example as an attribute tester for fresh and irradiated nuclear material during safeguards inspections. 1,7 Limitations in crystal growth do not allow the production of large crystals, and therefore their efficiency is limited.…”

Section: Introductionmentioning

confidence: 99%

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Experiments and Monte Carlo modeling of a higher resolution Cadmium Zinc Telluride detector for safeguards applications

Borella

2016

Int. J. Mod. Phys. Conf. Ser.

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The Belgian Nuclear Research Centre is engaged in R&D activity in the field of Non Destructive Analysis on nuclear materials, with focus on spent fuel characterization. A 500 mm 3 Cadmium Zinc Telluride (CZT) with enhanced resolution was recently purchased. With a full width at half maximum of 1.3% at 662 keV, the detector is very promising in view of its use for applications such as determination of uranium enrichment and plutonium isotopic composition, as well as measurement on spent fuel. In this paper, I report about the work done with such a detector in terms of its characterization. The detector energy calibration, peak shape and efficiency were determined from experimental data. The data included measurements with calibrated sources, both in a bare and in a shielded environment. In addition, Monte Carlo calculations with the MCNPX code were carried out and benchmarked with experiments.

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