Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Willem G. J. Langeveld"'
Publikováno v:
IEEE Transactions on Nuclear Science. 64:1801-1809
Pulse shape discrimination (PSD) in scintillators is useful to distinguish between signals from neutrons and gamma rays. A standard algorithm is to divide the integral of the tail end of the pulse by the total pulse integral, which itself yields the
Autor:
Willem G. J. Langeveld
Publikováno v:
Physics Procedia. 90:291-304
The most widely used technology for the non-intrusive active inspection of cargo containers and trucks is x-ray radiography at high energies (4-9 MeV). Technologies such as dual-energy imaging, spectroscopy, and statistical waveform analysis can be u
Autor:
Willem G. J. Langeveld
Publikováno v:
25TH INTERNATIONAL CONFERENCE ON THE APPLICATION OF ACCELERATORS IN RESEARCH AND INDUSTRY.
The most widely used technology for non-intrusive active inspection of cargo containers and trucks is x-ray radiography at high energies (4-9 MeV). Techniques such as dual-energy imaging, spectroscopy (Z-SPEC), and statistical waveform analysis (Z-SC
Autor:
Willem G. J. Langeveld, J. Kwong
Publikováno v:
IEEE Transactions on Nuclear Science. 63:516-523
Noise Spectroscopy is a statistical technique to extract spectral information from x rays transmitted through cargo and is especially effective when used with fast scintillation detectors and waveform digitization electronics to measure both the wave
Autor:
Kanai S. Shah, Willem G. J. Langeveld, Urmila Shirwadkar, Jarek Glodo, Chuncheng Ji, Michael Spens, Jacqueline Garcia, Josh Tower, Shaun D. Clarke, Edgar V. van Loef, Lakshmi Soundara Pandian, Sara A. Pozzi, Andrey Gueorguiev, Dan Strellis, Gary Markosyan
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 954:161289
Low-cost radiation detectors capable of providing efficient gamma-ray and neutron detection are essential in passive nuclear monitoring systems such as radiation portal monitors (RPMs) and detection of Special Nuclear Materials (SNM) through Active I
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 954:161204
We compare the pulse-shape-discrimination performance of a large Stilbene detector, manufactured at the Lawrence Livermore National Laboratory, to a similarly sized liquid scintillator, made by Eljen Technologies, Inc. (type EJ309), under various hig
Publikováno v:
Physics Procedia. 66:249-259
Two goals for security scanning of cargo and freight are the ability to determine the type of material that is being imaged, and to do so at low radiation dose. One commonly used technique to determine the effective Z of the cargo is dual-energy imag
Autor:
Martin Janecek, Willem G. J. Langeveld
Publikováno v:
Physics Procedia. 66:260-269
The bremsstrahlung X-ray spectrum in high-energy, high-intensity X-ray cargo inspection systems is attenuated and modified by cargo materials depending on the cargo atomic number (Z). Spectroscopy of transmitted x rays is thus useful to measure the a
Publikováno v:
IEEE Transactions on Nuclear Science. 60:1016-1023
We report on a feasibility study of scintillation detectors with fast decay times which might be used to enable spectroscopy in a high-count-rate, high-energy x-ray environment, such as is used for cargo inspection. Such detectors need to have a smal
Autor:
P. Grudberg, S. Sinha, C. Condron, M. Elsalim, Timothy M. Shaw, P. Ryge, Willem G. J. Langeveld, V. Hu
Publikováno v:
IEEE Transactions on Nuclear Science. 60:937-945
The bremsstrahlung X-ray spectrum produced by X-ray sources used in cargo inspection systems is attenuated and modified by materials in the cargo in a Z-dependent way and then detected in a radiographic detector array. We have previously shown that i