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There are a total of 77 record(s) matching your query.
Sorted by: Date Added To NTRS in Descending order
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Addition of a gamma ray spectrometer to the alpha scattering experiment as designed for the Surveyor mission
Author(s): Harrington, T. M.; Metzger, A. E.
Abstract: Gamma ray spectroscopy and alpha scattering techniques for compositional analysis of lunar and planetary surfaces
NASA Center: Jet Propulsion Laboratory
Publication Year: 1969
Added to NTRS: 2008-12-26
Accession Number: 70N14132; Document ID: 19700004828; Report Number: JPL-TR-32-1423, NASA-CR-107314
Surface chemistry of selected lunar regions
Author(s): Bielefeld, M. J.; Reedy, R. C.; Metzger, A. E.; Trombka, J. I.; Arnold, J. R.
Abstract: A completely new analysis has been carried out on the data from the Apollo 15 and 16 gamma ray spectrometer experiments. The components of the continuum background have been estimated. The elements Th, K, Fe and Mg give ...
NASA Center: Goddard Space Flight Center, Jet Propulsion Laboratory
Publication Year: 1976
Added to NTRS: 2008-06-30
Accession Number: 76N28139; Document ID: 19760021051; Report Number: NASA-TM-X-71157, X-682-76-149
Reanalysis of the Apollo cosmic gamma-ray spectrum in the 0.3 to 10 MeV energy region
Author(s): Trombka, J. I.; Dyer, C. S.; Evans, L. G.; Bielefeld, M. J.; Seltzer, S. M.; Metzger, A. E.
Abstract: Additional data obtained from the Apollo-16 and -17 missions, together with collateral calculations on background radiation effects, have enabled an improved subtraction of unwanted backgrounds from the diffuse cosmic ...
NASA Center: Goddard Space Flight Center
Publication Year: 1976
Added to NTRS: 2008-06-30
Accession Number: 76N28148; Document ID: 19760021060; Report Number: NASA-TM-X-71150, X-682-76-128
Soft X-Ray Emissions from Planets and Moons
Author(s): Bhardwaj, A.; Gladstone, G. R.; Elsner, R. F.; Waite, J. H., Jr.; Grodent, D.; Cravens, T. E.; Howell, R. R.; Metzger, A. E.; Ostgaard, N.; Maurellis, A., et al.
Abstract: A wide variety of solar system planetary bodies are now known to radiate in the soft x-ray energy (<5 keV) regime. These include planets (Earth, Jupiter, Venus, Saturn): bodies having thick atmosphere and with/without ...
NASA Center: Jet Propulsion Laboratory, Marshall Space Flight Center
Publication Year: 2002
Added to NTRS: 2008-06-02
Document ID: 20020066766
Performance of a breadboard electronics system developed for a lunar orbiter gamma ray spectrometer
Author(s): Metzger, A. E.
Abstract: Breadboard model tests of electronic system for remote sensing gamma ray spectrometers
NASA Center: Jet Propulsion Laboratory
Publication Year: 1968
Added to NTRS: 2008-05-29
Accession Number: 68N37688; Document ID: 19680028216; Report Number: JPL-TR-32-1297, NASA-CR-97364
Remote Sensing of Planetary Surfaces Using Gamma-Ray/X-ray Spectroscopy
Author(s): Reedy, R. C.; Moss, C. E.; Trombka, J. I.; Evans, L. G.; Floyd, S. R.; Starr, R.; Clark, P. E.; Boynton, W. V.; Burger, A.; Franks, L. A.; Groves, J. L.; Schweitzer, J.; James, R. B.; Lasche, G. P.; Rester, A. C.; Metzger, ...
Abstract: No Abstract Available
NASA Center: Jet Propulsion Laboratory
Publication Year: 1997
Added to NTRS: 2006-12-25
Document ID: 20060036867
Gamma-Ray Burst Arrival-Time Localizations: Simultaneous Observations by Mars Observer, Compton Observatory, and Ulysses
Author(s): Laros, J. G.; Boynton, W. V.; Hurley, K. C.; McCollough, M. L.; Fishman, G. J.; Meegan, C. A.; Cline, T. L.; Palmer, D. M.; Starr, R. D.; Trombka, J. I.; Boer, M.; Niel, M.; Metzger, A. E.
Abstract: Between October 4, 1992, and August 1, 1993, concurrent coverage by the Compton Gamma-Ray Observatory (CGRO), Mars Observer (MO), and Ulysses spacecraft, was obtained for 78 Gamma-Ray Bursts (GRBs).
NASA Center: Jet Propulsion Laboratory
Publication Year: 1996
Added to NTRS: 2006-12-25
Document ID: 20060036708
Composition of the Moon as Determined from Orbit by Gamma-Ray Spectroscopy
Author(s): Metzger, A. E.
Abstract: A spacecraft placed in a planetary orbit of suitably high inclination will pass over all or most of the planet's surface in a matter of several weeks to months. The quite prodigious scientific potential of planetary ...
NASA Center: Jet Propulsion Laboratory
Publication Year: 1994
Added to NTRS: 2006-12-25
Document ID: 20060042328
A combined focusing X-ray diffractometer and nondispersive X-ray spectrometer for lunar and planetary analysis.
Author(s): Gupta, K. D.; Metzger, A. E.; Schnopper, H. W.; Shields, R. A.
Abstract: Combined focusing X-ray diffractometer and nondispersive X-ray spectrometer for lunar and planetary analysis
NASA Center: NASA (non Center Specific)
Publication Year: 1966
Added to NTRS: 2006-11-06
Accession Number: 67A10689; Document ID: 19670031960
A combined focusing x-ray diffractometer and nondispersive x-ray spectrometer for remote analysis- a preliminary report
Author(s): Gupta, K. D.; Metzger, A. E.; Schnopper, H. W.; Shields, R. A.
Abstract: Combined focusing X-ray diffractometer and nondispersive X-ray spectrometer for remote analysis
NASA Center: Jet Propulsion Laboratory
Publication Year: 1965
Added to NTRS: 2006-11-06
Accession Number: 65N32459; Document ID: 19650022858
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