Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Alan W. Hunt"'
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 877:192-196
High-energy delayed γ -ray spectroscopy is a potential technique for directly assaying spent fuel assemblies and achieving the safeguards goal of quantifying nuclear material inventories for spent fuel handling, interim storage, reprocessing facilit
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 792:67-73
The delayed γ-ray and neutron fission signals utilized in active inspection techniques were measured simultaneously in order to directly compare their detection sensitivities. Fissionable and non-fissionable targets were irradiated by a 15-Hz pulsed
Autor:
Raoul Kopelman, Sima Mofakham, Paivo Kinnunen, Irene Sinn, Theodore Albertson, Remy Elbez, Brandon H. McNaughton, Alan W. Hunt, Duane W. Newton
Publikováno v:
Small. 8:2477-2482
As indicated by leading healthcare agencies like the Centers for Disease Control and Prevention (CDC) and the World Health Organization (WHO), the rising antibiotic resistance of bacteria is one of the major concerns of modern healthcare, and the dev
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 662:71-80
Successful detection of fissionable material contained in a variety of matrices was demonstrated by photon active interrogation of fissionable and inert target materials. Samples were irradiated with pulsed 15 MeV photons generated by a LINAC and tun
Publikováno v:
Journal of Nondestructive Evaluation. 30:221-224
The surface of an annealed 316L stainless steel coupon was laser shock peened and Vickers hardness measurements were subsequently taken of its surface. This Vickers hardness data was compared with measurements taken using the technique of positron an
Publikováno v:
Reviews of Accelerator Science and Technology. :83-101
Active, nondestructive interrogation with neutrons and photons has seen a renaissance in recent years, owing to a broad spectrum of important applications in security, nuclear nonproliferation, contraband detection and materials analysis. Active meth
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 606:811-815
The detection and identification of delayed fission γ -rays emitted between intense bremsstrahlung pulses was investigated as a method to discriminate between fissionable and non-fissionable materials. Photofission and other photonuclear reactions w
Publikováno v:
physica status solidi c. 4:3731-3734
The method presented herein uses the MCNPX Monte Carlo particle transport code to track individual positrons and other particles through geometry that accounts for the detectors, backing foils, samples and sources with their actual sizes, positions a
Publikováno v:
physica status solidi c. 4:3595-3598
Positron Systems, Inc. applies surface and volumetric positron techniques to investigate damage in metal components in operational conditions. The width and shape of Doppler Broadening gamma peak (S-parameter) is used for defect analysis. Two techniq
Autor:
Alan W. Hunt, Sergey D. Chemerisov, Yan Ching Jean, Hongmin Chen, Charles D. Jonah, David M. Schrader
Publikováno v:
physica status solidi c. 4:3957-3960
The development of the APosS at the Argonne low-energy linac is discussed. We measured the yields and outline strategies to increase the number of slow positrons. We describe the measurement of the yield of slow positrons as a function of electron-be