Výsledky vyhledávání

Ion microbeam studies of cadmium zinc telluride radiation detectors by IBICC

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

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8e7e311ff76f2e1fd837696e4c9c7a08
https://doi.org/10.1016/s0168-583x(99)00381-x

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Compensation and trapping in CdZnTe radiation detectors studied by thermoelectric emission spectroscopy, thermally stimulated conductivity, and current-voltage measurements

Autor: E. Y. Lee, Haim Hermon, Ralph B. James, R.W. Olsen

Publikováno v: Journal of Electronic Materials. 28:766-773

The thermal ionization energies of traps and their types, whether electron or hole traps, were measured in commercial CdZnTe crystals for radiation detectors. The measurements were done between 20 and 400K using thermoelectric emission spectroscopy (

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1088d821c8b78f438f59da2712a04305
https://doi.org/10.1007/s11664-999-0068-0

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Radiation damage measurements in room-temperature semiconductor radiation detectors

Autor: R.W. Olsen, Jacob I. Trombka, Ralph B. James, Larry Franks, B. A. Brunett, Gyoegy Vizkelethy, Barney Lee Doyle, David S. Walsh

Publikováno v: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 428:95-101

The literature of radiation damage measurements on cadmium zinc telluride (CZT), cadmium telluride (CT), and mercuric iodide (HgI 2 ) is reviewed and in the case of CZT supplemented by new alpha particle data. CZT strip detectors exposed to intermedi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c9b3688d476aff011e409ad51e0864fd
https://doi.org/10.1016/s0168-9002(98)01585-x

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Material properties of large-volume cadmium zinc telluride crystals and their relationship to nuclear detector performance

Publikováno v: Journal of Electronic Materials. 27:788-799

The material showing the greatest promise today for production of large-volume gamma-ray spectrometers operable at room temperature is cadmium zinc telluride (CZT). Unfortunately, because of deficiencies in the quality of the present material, high-r

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0681aab09359552958ca1744e99fd84b
https://doi.org/10.1007/s11664-998-0055-x

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GABAA Receptor

Autor: R.W. Olsen, G.-D. Li

γ-Aminobutyric acid (GABA) is the major inhibitory neurotransmitter, mediating synaptic and tonic inhibition at virtually all nerve cells in the central nervous system. This amino acid is synthesized in one step from l -glutamate by the enzyme gluta

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::31ff1d857cbc278cd84d29c1eb8446b5
https://doi.org/10.1016/b978-0-12-378630-2.00339-x

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Thermal neutron detection with cadmium1−x zincx telluride semiconductor detectors

Autor: John T. Lindsay, Douglas S. McGregor, R.W. Olsen

Publikováno v: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 381:498-501

Cadmium zinc telluride (CdZnTe) detectors have been used to detect thermal neutrons. The CdZnTe detectors were placed in a double diffracted thermal neutron beam and the prompt gamma ray emissions from thermal neutron interactions in the Cd have been

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::93bc9b3da0f8f1a15360d312577f9b59
https://doi.org/10.1016/s0168-9002(96)00580-3

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Material analysis and characterization on zone refined and zone leveled vertical zone melt GaAs for radiation spectrometers

Autor: R.L. Henry, Z-Q. Fang, P.E.R. Nordquist, Douglas S. McGregor, E. Soria, Michael M. Schieber, E. Cross, Arlyn J. Antolak, M. G. Mier, David C. Look, J. M. Van Scyoc, H. Yoon, R.W. Olsen, Ralph B. James, Tuviah E. Schlesinger, D.H. Morse, Mark S. Goorsky, James E. Toney

Publikováno v: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 380:84-87

GaAs is a wide band gap (1.42 eV) semiconductor that has shown promise as a room temperature operated γ-ray detector. A practical γ-ray detector would be large in volume, hence the resistivity of the material must be high to ensure large depletion

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c1f5a1e4dd45b1b633bbde6f1ec0fd09
https://doi.org/10.1016/s0168-9002(96)00337-3

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Comparison of vertical gradient freeze bulk GaAs and custom grown vertical zone melt bulk GaAs as radiation spectrometers

Autor: H.C. Chui, R. L. Henry, J.E. Flatley, C.L. Wang, Douglas S. McGregor, P.E.R. Nordquist, M. Pocha, R.W. Olsen

Publikováno v: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 380:165-168

Custom grown vertical zone melt (VZM) ingots of GaAs have been zone refined and zone leveled. The crystallinity, impurity concentrations, defect concentrations, and electrical properties of the ingots have been studied. Radiation detectors fabricated

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::571f2e82467ae56ff8708c7e0d999b6d
https://doi.org/10.1016/s0168-9002(96)00302-6

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Semi-insulating bulk GaAs as a semiconductor thermal-neutron imaging device

Autor: C.C. Brannon, R.W. Olsen, John T. Lindsay, Douglas S. McGregor

Publikováno v: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 380:271-275

Thermal-neutron Schottky barrier detector arrays fabricated from semi-insulating bulk GaAs are presently being tested. The devices use a film of 10B to convert the incident thermal-neutron field into α particles and lithium ions, either of which int

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2fd4f51b35895b8eb2c1c2fa7b6bf5af
https://doi.org/10.1016/s0168-9002(96)00347-6

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