Zobrazeno 1 - 10
of 281
pro vyhledávání: '"G. W. McKinney"'
Publikováno v:
IEEE Transactions on Nuclear Science. 53:2242-2246
Active interrogation is necessary to detect highly enriched uranium in large cargo containers and trucks. To achieve sufficient penetration, most nuclear techniques first interrogate an object with high-energy photons or neutrons, to produce fission
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1bcce0e09e55de0f1023d01f8916d0af
https://doi.org/10.1109/tns.2006.877856
https://doi.org/10.1109/tns.2006.877856
Autor:
E Cascio, S.A. Soldner, R. L. Tokar, B. L. Barraclough, Csaba Szeles, Christopher T. Russell, Thomas H. Prettyman, Herbert O. Funsten, S. A. Storms, G. W. McKinney, W. C. Feldman, David J. Lawrence, K. R. Fuller, Frank P. Ameduri
Publikováno v:
IEEE Transactions on Nuclear Science. 50:1190-1197
We present the design of the gamma-ray and neutron spectrometer (GR/NS) for Dawn, which is a NASA Discovery-class mission to explore two of the largest main-belt asteroids, 1 Ceres and 4 Vesta, whose accretion is believed to have been interrupted by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0711b2a33d0934c7b85c5ca2fbaefe15
https://doi.org/10.1109/tns.2003.815156
https://doi.org/10.1109/tns.2003.815156
Publikováno v:
EPJ Web of Conferences. 4/17/2024, Vol. 294, p1-7. 7p.
Autor:
Valentine, Timothy1 valentinete@ornl.gov
Publikováno v:
EPJ Web of Conferences. 4/17/2024, Vol. 294, p1-8. 8p.
Autor:
Thomas H. Prettyman, Justin J. Hagerty, W. C. Feldman, R. C. Elphic, David T. Vaniman, David J. Lawrence, G. W. McKinney
Publikováno v:
Journal of Geophysical Research: Planets. 111
[1] Gamma ray spectroscopy data acquired by Lunar Prospector are used to determine global maps of the elemental composition of the lunar surface. Maps of the abundance of major oxides, MgO, Al2O3, SiO2, CaO, TiO2, and FeO, and trace incompatible elem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e2b9ac079d0fc357d59575ddfce58c1
https://doi.org/10.1029/2005je002656
https://doi.org/10.1029/2005je002656
Autor:
R. C. Elphic, G. W. McKinney, Thomas H. Prettyman, David J. Lawrence, Justin J. Hagerty, W. C. Feldman
Publikováno v:
Journal of Geophysical Research. 111
[1] The MCNPX radiation transport code is used to simulate cosmic ray interactions within the Moon. Accurate source, geometric, and physics models are developed to successfully benchmark neutron density results with Apollo 17 measurements. The peak o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de98111c592c5014aee1bd30d0890f10
https://doi.org/10.1029/2005je002551
https://doi.org/10.1029/2005je002551
Autor:
G. W. McKinney, Sylvestre Maurice, David J. Lawrence, W. C. Feldman, Justin J. Hagerty, R. C. Elphic, Thomas H. Prettyman
Publikováno v:
Journal of Geophysical Research. 111
[1] New models have been computed for the Lunar Prospector (LP) thermal and epithermal neutron counting rates using the particle transport code MCNPX. This work improves upon previous studies by using one code to model the neutron production, transpo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94671c915541630107f679f6f26628d7
https://doi.org/10.1029/2005je002637
https://doi.org/10.1029/2005je002637
Autor:
James R. Murphy, G. W. McKinney, Albert E. Metzger, David J. Lawrence, William V. Boynton, R. D. Starr, S. W. Squyres, Michael T. Mellon, Sylvestre Maurice, R. L. Tokar, Suniti Karunatillake, W. C. Feldman, Thomas H. Prettyman
Publikováno v:
Journal of Geophysical Research. 109
[1] Neutron spectroscopy data acquired by Mars Odyssey are analyzed to determine the abundance and depth of near-surface water ice as a function of latitude in the southern hemisphere as well as the inventory of CO2 in the south polar residual cap. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da3cd49727da0d59f6e7a2adcb7175f7
https://doi.org/10.1029/2003je002139
https://doi.org/10.1029/2003je002139
Autor:
Sylvestre Maurice, R. L. Tokar, Suniti Karunatillake, S. W. Squyres, N. J. Kelly, Thomas H. Prettyman, K. Kerry, James R. Murphy, D. K. Hamara, William V. Boynton, W. C. Feldman, G. W. McKinney
Publikováno v:
Journal of Geophysical Research. 108
[1] The thickness of seasonal CO2 frost that covers the north pole of Mars during the winter and spring seasons is studied using gamma ray and neutron data measured using the gamma ray spectrometer suite of instruments aboard Mars Odyssey. The result
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad1bcbb357775058e17dd3c860a27323
https://doi.org/10.1029/2003je002101
https://doi.org/10.1029/2003je002101
Autor:
R. C. Reedy, Steven W. Squyres, R. L. Tokar, David J. Lawrence, K. R. Moore, Thomas H. Prettyman, Olivier Gasnault, W. C. Feldman, G. W. McKinney, S. L. Lawson, William V. Boynton, R. C. Elphic, Sylvestre Maurice
Publikováno v:
Science (New York, N.Y.). 297(5578)
Global distributions of thermal, epithermal, and fast neutron fluxes have been mapped during late southern summer/northern winter using the Mars Odyssey Neutron Spectrometer. These fluxes are selectively sensitive to the vertical and lateral spatial
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::31495a450e25b61ccac7ee9821af2fed
https://pubmed.ncbi.nlm.nih.gov/12040091
https://pubmed.ncbi.nlm.nih.gov/12040091