S
S. R. Floyd
Researcher at Goddard Space Flight Center
Publications - 34
Citations - 665
S. R. Floyd is an academic researcher from Goddard Space Flight Center. The author has contributed to research in topics: Neutron & Near-Earth object. The author has an hindex of 12, co-authored 34 publications receiving 624 citations.
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Journal ArticleDOI
The elemental composition of asteroid 433 Eros: Results of the NEAR-Shoemaker X-ray spectrometer
J. Trombka,S. W. Squyres,J. Brückner,William V. Boynton,Robert C. Reedy,Timothy J. McCoy,P. Gorenstein,Larry G. Evans,James R. Arnold,R. D. Starr,Larry R. Nittler,M. E. Murphy,I. Mikheeva,Ralph L. McNutt,T. P. McClanahan,E. McCartney,John O. Goldsten,Robert E. Gold,S. R. Floyd,Pamela Elizabeth Clark,Thomas H. Burbine,J. S. Bhangoo,Samuel Bailey,M. Petaev +23 more
TL;DR: Major element composition ratios for regions of the asteroid 433 Eros imaged during two solar flares and quiet sun conditions during the period of May to July 2000 are reported.
Journal ArticleDOI
Lunar Exploration Neutron Detector for the NASA Lunar Reconnaissance Orbiter
I. G. Mitrofanov,Arlin E. Bartels,Y. I. Bobrovnitsky,William V. Boynton,Gordon Chin,H. L. Enos,Larry G. Evans,S. R. Floyd,James B. Garvin,Dmitry Golovin,A. S. Grebennikov,K. Harshman,L. L. Kazakov,John W. Keller,A. A. Konovalov,A. S. Kozyrev,A. R. Krylov,M. L. Litvak,A. V. Malakhov,T. P. McClanahan,G. M. Milikh,Maxim Mokrousov,S. N. Ponomareva,R. Z. Sagdeev,A. B. Sanin,V. V. Shevchenko,Valery Shvetsov,R. D. Starr,G. N. Timoshenko,T. M. Tomilina,Vladislav Tretyakov,Jacob I. Trombka,V. S. Troshin,V. N. Uvarov,A. Varennikov,Andrey Vostrukhin +35 more
TL;DR: The design of the Lunar Exploration Neutron Detector (LEND) experiment was optimized to address several of the primary measurement requirements of NASA's Lunar Reconnaissance Orbiter (LRO): high spatial resolution hydrogen mapping of the Moon's uppermost surface, identification of putative deposits of appreciable near-surface water ice in the Moon polar cold traps, and characterization of the human-relevant space radiation environment in lunar orbit as discussed by the authors.
Journal ArticleDOI
Compositional mapping with the NEAR X ray/gamma ray spectrometer
Jacob I. Trombka,S. R. Floyd,William V. Boynton,Samuel Bailey,J. Brückner,S. W. Squyres,Larry G. Evans,Pamela Elizabeth Clark,R. D. Starr,E. M. Fiore,Robert E. Gold,John O. Goldsten,Ralph L. McNutt +12 more
TL;DR: The X ray/gamma ray spectrometer (XGRS) instrument on board the NEAR spacecraft will map asteroid 433 Eros in the 07 keV to 10 MeV energy region as discussed by the authors.
Journal ArticleDOI
Crime scene investigations using portable, non-destructive space exploration technology
Jacob I. Trombka,Jeffrey Schweitzer,Carl M. Selavka,Mark Dale,Norman Gahn,S. R. Floyd,James John Marie,Maritza A. Hobson,Maritza A. Hobson,Jerry Zeosky,Kenneth F. Martin,Timothy McClannahan,Pamela H. Solomon,Elyse Gottschang +13 more
TL;DR: It is believed that there may be a unique GSR signature based on the Sb to Ba ratio, and a database made up of the inorganic composition of GSR is being developed.
Journal ArticleDOI
Experiment LEND of the NASA Lunar Reconnaissance Orbiter for high-resolution mapping of neutron emission of the Moon.
I. G. Mitrofanov,A. B. Sanin,Dmitry Golovin,M. L. Litvak,A. A. Konovalov,A. S. Kozyrev,A. V. Malakhov,Maxim Mokrousov,Vladislav Tretyakov,V. S. Troshin,V. N. Uvarov,A. Varenikov,Andrey Vostrukhin,V. V. Shevchenko,V. N. Shvetsov,A. R. Krylov,G. N. Timoshenko,Y. I. Bobrovnitsky,T. M. Tomilina,A. S. Grebennikov,L. L. Kazakov,R. Z. Sagdeev,G. Milikh,Arlin E. Bartels,Gordon Chin,S. R. Floyd,James B. Garvin,John W. Keller,T. P. McClanahan,Jacob I. Trombka,William V. Boynton,K. Harshman,R. D. Starr,Larry G. Evans +33 more
TL;DR: If the presence of ice deposits in polar "cold traps" is confirmed, a unique record of many millions of years of lunar history would be obtained, by which the history of lunar impacts could be discerned from the layers of water ice and dust.