Zobrazeno 1 - 5
of 5
pro vyhledávání: '"Joel Lee Groves"'
Autor:
Hatice Akkurt, Richard Hoover, Larry G. Evans, Jacob I. Trombka, Joel Lee Groves, T. McClanahan, Timothy J. McCoy, S. R. Floyd, Lucy F. Lim, Jeffrey Schweitzer, R. D. Starr, Ralph B. James
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 241:232-237
A pulsed neutron/gamma-ray detection system for use on rovers to survey the elemental concentrations of Martian and Lunar surface and subsurface materials is evaluated. A robotic survey system combining a pulsed neutron generator (PNG) and detectors
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 422:595-599
Gamma-ray spectra provide useful data in the study of the development of planets. Measurements made on landers overcome many of the limitations of orbital measurements, especially for solar-system bodies where atmospheres interfere with obtaining orb
Autor:
Hatice Akkurt, Timothy J. McCoy, L. G. Evans, R. D. Starr, S. R. Floyd, M.T. Smith, A. M. Parsons, T. P. McClanahan, Joel Lee Groves, Jeffrey Schweitzer, Jacob I. Trombka, E. Amatucci
Publikováno v:
2005 IEEE Aerospace Conference.
A pulsed neutron gamma-ray system (PNGS) can be used to determine the subsurface planetary geochemistry on rover missions to Mars and other planetary bodies. These data can be used to unravel the history of formation of biogenic materials, characteri
Autor:
R. A. Hoover, S. R. Floyd, Joel Lee Groves, Jeffrey Schweitzer, Lucy F. Lim, J.I. Trombka, Larry G. Evans, Timothy J. McCoy, Y Eisen, R. D. Starr, Ralph B. James
Publikováno v:
2003 IEEE Aerospace Conference Proceedings (Cat. No.03TH8652).
Autor:
Joel Lee Groves, Jeffrey Schweitzer
Publikováno v:
AIP Conference Proceedings.
Subsurface remote sensing measurements are widely used for oil and gas exploration, for oil and gas production monitoring, and for basic studies in the earth sciences. Radiation sensors, often including small accelerator sources, are used to obtain b