Zobrazeno 1 - 10
of 90
pro vyhledávání: '"J.F. Harmon"'
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
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e810085b8147e13a1ba406ba392fd1d
https://doi.org/10.1142/s1793626811000495
https://doi.org/10.1142/s1793626811000495
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 261:822-826
At the Idaho Accelerator Center, we employed a pulsed bremsstrahlung photon beam generated from the 44-MeV, 1300 MHz L-band electron Linac which was then directed onto a 99.9% natural magnesium target (isotopically 10% 25Mg). We investigated a method
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b4e38b4664377559d64f1ef4f571a308
https://doi.org/10.1016/j.nimb.2007.04.251
https://doi.org/10.1016/j.nimb.2007.04.251
Autor:
Douglas P. Wells, K. Smith, J.F. Harmon, Farida Selim, Stuart A. Maloy, Alan W. Hunt, J. Williams, S.J. Thompson, J. Kumar, L. Tchelidze, Ajit K. Roy
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 562:688-691
Radiation damage and other defect studies of materials are limited to thin samples because of inherent limitations of well-established techniques such as diffraction methods and traditional positron annihilation spectroscopy (PAS) [P. Hautojarvi, et
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9f794f0a826ef1a4741063c569252aa
https://doi.org/10.1016/j.nima.2006.02.150
https://doi.org/10.1016/j.nima.2006.02.150
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 241:262-266
Two techniques have recently been developed to quickly and easily apply positron annihilation spectroscopies to large structural components found in civil engineering, aviation, etc. In this paper, the authors discuss how to extend imaging capabiliti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09d93c0adb4cafe6869198cde7e583b8
https://doi.org/10.1016/j.nimb.2005.07.186
https://doi.org/10.1016/j.nimb.2005.07.186
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 241:253-256
Doppler broadening of positron annihilation spectroscopy was performed during high-power short-pulsed laser irradiation to investigate the effects of the induced shock waves on the measured positron annihilation parameters of Cu and W. The measuremen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a9c83def9bb2b6243f53c5c294a7ef4
https://doi.org/10.1016/j.nimb.2005.07.030
https://doi.org/10.1016/j.nimb.2005.07.030
Publikováno v:
Radiation Physics and Chemistry. 68:427-430
The Idaho Accelerator Center (IAC) has developed new techniques for positron annihilation spectroscopy (PAS) by using highly penetrating γ -rays to create positrons inside the material via pair production. Two sources of γ -rays have been employed.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::812ddaa755efc895b3984af6a0af5b5b
https://doi.org/10.1016/s0969-806x(03)00249-4
https://doi.org/10.1016/s0969-806x(03)00249-4
Akademický článek
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Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 495:154-160
Nondestructive assay and defect analysis probes based on bremsstrahlung-induced processes have been developed to identify elements and probe defects in large volume samples. Bremsstrahlung beams from (electron accelerators) with end-point energies bo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a83563f00c5674ce9f9c27868ab85249
https://doi.org/10.1016/s0168-9002(02)01575-9
https://doi.org/10.1016/s0168-9002(02)01575-9
Publikováno v:
Waste Management. 21:581-588
The high dose irradiation of windblown soil deposited onto the surface of spent nuclear fuel is of concern to long-term fuel storage stability. Such soils could be exposed to radiation fields as great as 1.08 x 10(-3) C/kg-s (15,000 R/hr) during the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1877be1cc6d15793a7a23940f88f9a00
https://doi.org/10.1016/s0956-053x(00)00106-9
https://doi.org/10.1016/s0956-053x(00)00106-9
Autor:
A.P Tonchev, J.F Harmon
Publikováno v:
Applied Radiation and Isotopes. 52:873-882
The yield has been determined for the excitation of 180g Ta ( J π =1 + ) from the 181 Ta(γ,n) reaction by measurements of γ rays emitted following the electron capture and β-decays of the 8.15 h ground state. The probability σ m /( σ m + σ g )
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7cf31e809a925bd7c1d10e33dc00f13e
https://doi.org/10.1016/s0969-8043(99)00132-3
https://doi.org/10.1016/s0969-8043(99)00132-3