Zobrazeno 1 - 10
of 47
pro vyhledávání: '"B. A. Brunett"'
Autor:
H Yoon, Larry Franks, B. A. Brunett, Ralph B. James, James E. Toney, Tuviah E. Schlesinger, E. Y. Lee
Publikováno v:
Materials Science and Engineering: R: Reports. 32:103-189
We present a comprehensive review of the material properties of cadmium zinc telluride (CZT, Cd1ˇxZnxTe) with zinc content xa 0:1‐0.2. Particular emphasis is placed on those aspects of this material related to room temperature nuclear detectors. A
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 458:76-84
We have developed a system to measure the spatial response of cadmium zinc telluride (CZT) radiation detectors. Using this system we have measured the response of several novel detector designs including several variations of the unipolar design. We
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 458:96-103
We have employed Low-Temperature Photoluminescence (LTPL) and Room-Temperature Photoluminescence Mapping (RTPLM) to explore the crystalline quality and material uniformity of Cadmium Zinc Telluride (CZT) radiation detector material grown by the Low-P
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 458:310-318
In this work we study the spectral performance of Cd 1− x Zn x Te pixel array detectors. The specific effects and relative importance of various detector parameters on spectral response are determined. While bulk material uniformity is still the fa
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 458:563-567
The electronic transport properties of Cadmium Zinc Telluride (CZT) determine the charge collection efficiency (i.e. the signal quality) of CZT detectors. These properties vary on both macroscopic and microscopic scales and depend on the presence of
Publikováno v:
Journal of Applied Physics. 86:3926-3933
In this article we show that the behavior of new devices fabricated from horizontal Bridgman CdZnTe reported recently can be explained by the same conventional electrostatics arguments used to analyze detectors made from high pressure Bridgman materi
Autor:
B. A. Brunett, R.W. Olsen, David S. Walsh, Gyoergy Vizkelethy, Barney Lee Doyle, Ralph B. James
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 158:437-444
Ion beam induced charge collection (IBICC) and time resolved IBICC (TRIBICC) techniques were used for imaging electronic properties of cadmium zinc telluride (CZT) room temperature radiation detectors. The detectors were bombarded with a scanned 5.4
Publikováno v:
Journal of Electronic Materials. 28:838-842
We investigated the resistivity variation of semi-insulating Cd1−xZnxTe used as room temperature nuclear radiation detectors, in relationship to the alloy composition. The resistivity and the zinc composition were determined using leakage current m
Autor:
N. N. Kolesnikov, Mark S. Goorsky, Michael M. Schieber, V. Komar, James E. Toney, Arlyn J. Antolak, Haim Hermon, Daniel H. Morse, Tuviah E. Schlesinger, C. Hackett, Ralph B. James, H. Yoon, B. A. Brunett, Edward E. Tarver
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 428:30-37
Vertical high-pressure Bridgman (VHPB) Cd 1- x Zn x Te (0.04 x 241 Am radioactive source was found. Electron lifetimes below 1 μs were measured in crystals having significant numbers of micro-defects, compared to lifetimes of 5–15 μs found in spe
Autor:
Ralph B. James, Nathan R. Hilton, J.C. Lund, T. S. Gilbert, J. M. Van Scyoc, H. Yoon, B. A. Brunett
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 428:1-7
Cadmium zinc telluride has experienced tremendous growth in its application to various radiation sensing problems over the last five years. However, there are still issues with yield, particularly of the large volume devices needed for imaging and se