Dr. John W. Keller

Laboratory for Extraterrestrial Physics, Code 691
NASA Goddard Space Flight Center
Greenbelt, MD 20771

Phone: (301) 286-3871

email: John.W.Keller@gsfc.nasa.gov

Present Position:
Astrophysicist
Astrochemistry Branch
Laboratory for Extraterrestrial Physics
NASA Goddard Space Flight Center
Research Area Experience:
Atomic and Molecular Physics of Astrophysical Significance, Space Plasma Physics Instrumentation
Education:
1977 - BS, Mathematics, Texas Tech University
1979 - MS, Chemistry, Texas Tech University
1984 - PhD, Chemistry, University of Maryland
Previous Positions:
1999-present: Astrophysicist, Astrochemistry Branch, NASA GSFC
1986-1999: Astrophysicist, Space Physics Division, NASA GSFC
1986-1992: Advisory Editor for Fullerence Science and Technolgoy Journal
1985-1986: Postdoctoral Research Associate, Dept. of Chemistry, University of Maryland
1984-1985: NAS/NRC Resident Research Associate, National Bureau of Standards, Gaithersburg, MD

Professional Societies:
American Astronomical Society (Division of Planetary Sciences)
American Physical Society
Selected Publications:

"A Gated Time-of-Flight Tophat Plasma Composition Analyzer for Space Physics Research," with D. J. Chornay, F. H. Hunsaker, K. W. Ogilvie, and M. A. Coplan, Rev. Sci. Inst., 1999, 70, 3167.

"Evaluation of an Elliptical Grid Mirror Electrostatic Analyzer for Space Applications," with D. J. Chornay and F. H. Hunsaker, Rev. Sci. Inst., 1997, 68, 1604.

"Imaging Low-Energy (<1keV) Neutral Atoms: Ion-Optical Design," with M. F. Smith, D. J. Chornay, F. A. Herrero, M. R. Aellig, P. Bochsler, and P. Wurz, Measurement Techniques in Space Plasma - Fields, Geophysical Monograph 103, American Geophysical Union, Washington, DC, pg 263, 1998.

"Observations of Electron Velocity Distribution Functions in the Solar Wind by the Wind Spacecraft: High Angular Resolution Strahl Measurements," with R. J. Fitzenreiter, K. W. Oglivie, and D. J. Chornay, Geophy. Res. Letter., 1998, 25, 249.

"A Comprehensive Plasma Instrument for the Wind Spacecraft," with K. W. Ogilvie, D. J. Chornay, R. J. Fritzenreiter, F. Hunsaker, J. Lobell, G. Miller, J. D. Scudder, E. C. Sittler Jr., R. Torbert, D. Bodet, G. Needell, A. J. Lazarus, J. T. Steinberg, J. H. Tappan, A. Marretic, and E. Gergin, Space Science Rev., 1995, 71, 55.

"HYDRA - A 3-D Electron and Ion Instrument for GGS/Polar," with J. Scudder, F. Hunsaker, G. Miller, J. Lobell, T. Zawistowski, K. Ogilvie, D. Chornay, F. Herrero, R. Fitzenreiter, D. Fairfield, J. Needell, D. Bodet, J. Googins, C. Kletzing, R. Torbet, J. Vandiver, R. Bentley, W. Fillius, C. McIlwain, E. Whipple, and A. Korth, Space Science Rev., 1995, 71, 459.

"Excitation of Collective States in Fullerenes," with N. Ju, and A. Bulgac, Computational Materials Science 1993, 2, 615.

"Excitation of Collective Plasmon States in Fullerenes," with N. Ju, and A. Bulgac, Phys. Rev. B 1993, 48, 9071.

"Electron Energy Loss Spectra of Buckminister Fullerene C60," with M. A. Coplan, Chem. Phys. Lett., 1992, 193, 89.

"Electron Energy Loss Spectra of Polycyclic Aromatic Hydrocarbons (PAHS's)," with M. A. Coplan and R. Goruganthu, Ap. J., 1992, 391, 872.

"Measurement of the Secondary Emission Yield of Electrons From Thin Carbon Foils After Passage of Low Energy Ions," with K. W. Ogilvie, J. W. Boring and R. W. McKemie, Nuclear Inst. and Meth. 1991, B61, 291.

"A High Speed Pitch Angle Sorter," with R. B. Torbert and J. Vandiver, Rev. Sci. Instrum. 1991, 62 , 1353.


Last Updated:
Thursday, 21 August 2003 at 09:47:34 EST