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Lawrence Berkeley National Laboratory Lawrence Berkeley National Laboratory Title Temperature Study of CdZnTe Coplanar-Grid Detectors Permalink
| Content Provider | Semantic Scholar |
|---|---|
| Author | Luke, Paul N. |
| Copyright Year | 2006 |
| Abstract | The coplanar-grid (CPG) and other electrononly detection techniques have made possible the use of CdZnTe-based detectors for gamma-ray spectroscopy when high efficiency, good energy resolution, and near room temperature operation are required. Despite the demonstrated potential of the technologies, widespread use remains hampered in part by the limited availability of the highly uniform CdZnTe material required for highresolution spectroscopy. However, it has been recently shown that mild cooling of CdZnTe CPG detectors can result in a significant improvement in the energy resolution of the detectors thereby allowing a wider range of material to be used for high-resolution applications. In this paper, we show that improved spectroscopic performance can consistently be achieved through a combination of detector cooling and increased detector bias. Energy resolutions of about 1 % FWHM at 662 keV for detector volumes up to 2.3 cm have been obtained at 20°C. With the electronic noise subtracted, this amounts to an intrinsic resolution of 0.76 %. We also show that further cooling of the detectors to -30°C leads to field polarization and a loss of spectroscopic performance. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://cloudfront.escholarship.org/dist/prd/content/qt875946jv/qt875946jv.pdf?t=lnqweu |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
