Zobrazeno 1 - 10
of 33
pro vyhledávání: '"J.D. Eskin"'
Autor:
J.D. Eskin, M.M. Blouke
Publikováno v:
IEEE Transactions on Electron Devices. 56:2468-2472
The intrinsic resolution of a solid-state detector such as a CCD is often dominated by diffusion of photogenerated charges. The resolution for imaging detectors has been successfully predicted using the Blouke-Robinson model, which calculates a modul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::684041b5ed14af1ef163799ec15ea303
https://doi.org/10.1109/ted.2009.2030609
https://doi.org/10.1109/ted.2009.2030609
Publikováno v:
Journal of Applied Physics. 85:647-659
The signal induced in a readout circuit connected to a pixel electrode in a semiconductor gamma-ray imaging array is calculated by solving the Laplace equation. Two approaches are presented that use Green functions in solving the boundary value probl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70cdcfdace6909bcb1c42bde4ab00287
https://doi.org/10.1063/1.369198
https://doi.org/10.1063/1.369198
Autor:
H.B. Barber, James M. Woolfenden, E.T. Young, K.J. Matherson, D.G. Marks, F.L. Augustine, Eustace L. Dereniak, Harrison H. Barrett, J.D. Eskin
Publikováno v:
IEEE Transactions on Nuclear Science. 45:354-358
Previous efforts by our group have demonstrated the potential of hybrid semiconductor detector arrays for use in gamma-ray imaging applications. In this paper, we describe progress in the development of a prototype imaging system consisting of a 64/s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74618a647f71d2d74003413243ac6890
https://doi.org/10.1109/23.682407
https://doi.org/10.1109/23.682407
Autor:
F.L. Augustine, F. P. Doty, B.A. Apotovsky, J.D. Eskin, E.T. Young, H.B. Barber, James M. Woolfenden, K.J. Matherson, Harrison H. Barrett, Eustace L. Dereniak, W. J. Hamilton, J. P. Garcia, D.G. Marks
Publikováno v:
Journal of Electronic Materials. 26:765-772
Previous work has shown that hybrid semiconductor detector arrays similar to those used in infrared focal-plane arrays are very attractive for use in nuclear medicine and other gamma-ray imaging applications. In this paper, we describe the developmen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2bc26fb2b6143e5fbd11123c2054dbd
https://doi.org/10.1007/s11664-997-0229-y
https://doi.org/10.1007/s11664-997-0229-y
Autor:
Jack F. Butler, D.G. Marks, J.E. Venzon, Eustace L. Dereniak, Harrison H. Barrett, B.A. Apotovsky, H.B. Barber, James M. Woolfenden, W. J. Hamilton, K.J. Matherson, E.T. Young, F.L. Augustine, J.D. Eskin, F.P. Doty
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 380:262-265
We report on the construction and initial testing of a 48 × 48 CdZnTe array with 125 μm pixel spacing and multiplexer readout. Large portions of the array function well but there was a loss of pixels near one corner of the array due to non-intercon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::34087fa2851f1fe42675d6c7bf100700
https://doi.org/10.1016/s0168-9002(96)00472-x
https://doi.org/10.1016/s0168-9002(96)00472-x
Autor:
H.B. Barber, James M. Woolfenden, B.A. Apotovsky, K.J. Matherson, F.L. Augustine, D.G. Marks, Harrison H. Barrett, W.J. Hamiltons, J.E. Venzon, F.P. Dotys, Eustace L. Dereniak, J.D. Eskin, E.T. Young
Publikováno v:
IEEE Transactions on Nuclear Science. 43:1253-1259
We report results of gamma-ray imaging and energy-resolution tests of a 48/spl times/48 CdZnTe array. Our detectors have 125 /spl mu/m square pixel electrodes produced by photolithography and are indium-bump-bonded to a multiplexer readout circuit. U
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::560b108381902a682ce45a8a9270dfc3
https://doi.org/10.1109/23.506673
https://doi.org/10.1109/23.506673
Publikováno v:
Physical Review Letters. 75:156-159
We analyze the effects of electrode size on performance of arrays of semiconductor gamma-ray detectors, especially when there is significant charge trapping. With large electrodes, motions of holes and electrons are of equal importance, but when the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::00767513489613ecfdb1a3198de8eb2f
https://doi.org/10.1103/physrevlett.75.156
https://doi.org/10.1103/physrevlett.75.156
Publikováno v:
Proceedings of 1994 IEEE Nuclear Science Symposium - NSS'94.
A gamma-ray detector can be modeled as a linear system which maps a photon flux with a given energy distribution to a pulse-height spectrum. In a perfect detector, the response to a monoenergetic beam would be a delta function. In any real detector,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6eb880efcc5acc8885174a1f50db1d88
https://doi.org/10.1109/nssmic.1994.474370
https://doi.org/10.1109/nssmic.1994.474370
Autor:
H.B. Barber, James M. Woolfenden, J. M. Van Scyoc, J.D. Eskin, H. Yoon, D.G. Marks, T.M. Teska, J.C. Lund, Ralph B. James, B. A. Brunett, Tuviah E. Schlesinger, Mark S. Goorsky, N. R. Hilton
Publikováno v:
1998 IEEE Nuclear Science Symposium Conference Record. 1998 IEEE Nuclear Science Symposium and Medical Imaging Conference (Cat. No.98CH36255).
Resistivity results from a 48/spl times/48 pixelated CdZnTe (CZT) radiation detector array are presented alongside X-ray topography and detector mapping with a collimated gamma-ray beam. By using a variety of measurements performed on the same sample
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2bfcfdf0c36ffa1af6ff2d68d14d169
https://doi.org/10.1109/nssmic.1998.775222
https://doi.org/10.1109/nssmic.1998.775222
Autor:
E.T. Young, Eustace L. Dereniak, D.G. Marks, J.D. Eskin, K.J. Matherson, N. R. Hilton, H.B. Barber, James M. Woolfenden
Publikováno v:
1997 IEEE Nuclear Science Symposium Conference Record.
We demonstrate the use of pixel arrays to map CdZnTe detector materials properties in situ. Our readout technique uses a multiplexer containing a gated integrator and is sensitive to DC currents. We have made extensive measurements of leakage current
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d98d1953b671840a1035f3fbfa20d5f4
https://doi.org/10.1109/nssmic.1997.672586
https://doi.org/10.1109/nssmic.1997.672586