Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Sean O'Neal"'
Autor:
Phillip Kerr, Nerine Cherepy, Jennifer Church, Gary Guethlein, Jim Hall, Colby McNamee, Sean O’Neal, Kyle Champley, Andy Townsend, Mayuki Sasagawa, Anthony Hardy, Saphon Hok
Publikováno v:
Radiation Detection Technology and Methods. 6:234-243
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a66b5c4305473a42dade5d0cdb86327
https://doi.org/10.1007/s41605-022-00315-7
https://doi.org/10.1007/s41605-022-00315-7
Publikováno v:
IEEE Transactions on Nuclear Science. 67:746-751
Plastic scintillators are widely used in radiation portal monitors because of their low cost and availability in large sizes. However, due to their low density and low effective atomic number ( Z ), they offer low intrinsic efficiency and little spec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4ed7402b3cd72ada6e396727dc5aba33
https://doi.org/10.1109/tns.2020.2971904
https://doi.org/10.1109/tns.2020.2971904
Publikováno v:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXIII.
Plastic-based scintillator detectors have many advantages over inorganic scintillators, including mechanical ruggedness and cost. However, their range of application has generally been limited by their lack of gamma spectroscopic performance. We have
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b83deac0d1005477491897d7df42a5c8
https://doi.org/10.1117/12.2596144
https://doi.org/10.1117/12.2596144
Autor:
Joel Kindem, Zachary M. Seeley, Stephen A. Payne, Sean O'Neal, E. L. Swanberg, Nerine J. Cherepy
Publikováno v:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXIII.
We report on a small gamma spectrometer with directional detection, based on two modules. Each module contains an array of 128 scintillator pixels coupled to reverse-biased photodiodes, an ASIC and a microcontroller. Modules communicate via USB and a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b534de4eb1d68749de3c8006601f1a3a
https://doi.org/10.1117/12.2596159
https://doi.org/10.1117/12.2596159
Autor:
Mayuki Ssasagawa, Kyle Champley, Andrew Townsend, Gary Guethlein, Sean O'Neal, Anthony J. Hardy, Colby J. McNamee, Nerine J. Cherepy, Jennifer Church, Phillip Kerr, J Hall
Publikováno v:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXIII.
Fast neutrons accessible from 14-MeV D-T neutron generators have higher transmission through high-Z materials compared to radiography X-rays due to a more uniform attenuation as a function of material Z. These neutrons can therefore image low-Z mater
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::43b0a7d06fa73fb61887c9f5d380d956
https://doi.org/10.1117/12.2596473
https://doi.org/10.1117/12.2596473
Autor:
J Hall, Robert D. Sanner, Saphon Hok, Zachary M. Seeley, R. Stoneking, Nerine J. Cherepy, Sean O'Neal, Colby J. McNamee, Lei Cao, Daniel J. Schneberk, P. A. Thelin, Stephen A. Payne, Ibrahim Oksuz, Gary Guethlein, B. F. Hobson, Gary Stone, Matt Bisbee, J. Mintz, P. Kerr
Publikováno v:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXII.
High energy X-rays and neutrons can provide 3-D volumetric views of large objects made of multiple materials. Lenscoupled computed tomography using a scintillator imaged on a CCD camera obtains high spatial resolution, while a surface-mounted segment
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02c3899c6cf1be798091d989f0734fa3
https://doi.org/10.1117/12.2569519
https://doi.org/10.1117/12.2569519
Autor:
Hadong Kim, E. L. Swanberg, Kanai S. Shah, Yaroslav Ogorodnik, Zhong He, Leonard J. Cirignano, Michael R. Squillante, William Koehler, Sean O'Neal, Alireza Kargar, Stephen A. Payne, Crystal L. Thrall
Publikováno v:
Frontiers in Physics, Vol 8 (2020)
Thallium bromide (TlBr) is a compound semiconductor with a band gap of 2.68 eV making it ideal for room temperature radiation detection. The high atomic numbers, 81 and 35, and the high density of 7.56 g/cm3 give it excellent gamma-ray stopping power
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37db960d61c480cdd5443eb7f487a91b
https://doi.org/10.3389/fphy.2020.00055
https://doi.org/10.3389/fphy.2020.00055
Publikováno v:
IEEE Transactions on Nuclear Science. 65:950-954
Thallium-bromide (TlBr) is currently under investigation for use as an alternative room-temperature semiconductor gamma-ray spectrometer. Performance of better than 1% full-width at half maximum at 662 keV can be achieved when TlBr detectors are cool
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28c65fcfd760eb5b461d431a0313eec8
https://doi.org/10.1109/tns.2018.2804038
https://doi.org/10.1109/tns.2018.2804038
Publikováno v:
IEEE Transactions on Nuclear Science. 65:955-960
Thallium bromide (TlBr) is an attractive material for room-temperature semiconductor radiation detection due to its high atomic number and density. Performance of better than 1% full-width at half maximum at 662 keV has been measured on $\sim 5 \time
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a471fcbedfcf9b595412e4fbbc82b38
https://doi.org/10.1109/tns.2018.2804165
https://doi.org/10.1109/tns.2018.2804165
Autor:
Charles R. Hurlbut, Stephen A. Payne, Saphon Hok, Sean O'Neal, Nerine J. Cherepy, Robert D. Sanner
Publikováno v:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXI.
Plastic scintillators are in wide use in radiation portal monitors because of their low cost and availability in large sizes. However, due to their low density and atomic number (Z), they offer low intrinsic efficiency and little to no spectroscopic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a53f0e55a8e4b2bb625ea959b3751c56
https://doi.org/10.1117/12.2530251
https://doi.org/10.1117/12.2530251