Dr. Louis J. Stief Astrochemistry Laboratory, Code 691 NASA Goddard Space Flight Center Greenbelt, MD 20771

Current Position

Emeritus Senior Scientist, Astrochemistry Laboratory

Education

1955 B.A. La Salle College, Philadelphia, PA
1960 Ph.D. Catholic University of America, Washington, DC

Professional Experience

• 1960-1961 NAS-NRC Postdoctoral Associate, National Bureau of Standards
• 1961-1962 NATO Postdoctoral Fellow, Sheffield University, U.K.
• 1962-1963 Independent Research Worker, Sheffield University, U.K.
• 1963-1968 Senior Chemist and subsequently Senior Scientist, Melpar, Inc.
• 1968-1969 NAS-NRC Senior Postdoctoral Research Associate, GSFC
• 1969-1976 Space Scientist, Astrochemistry Branch, GSFC
• 1976-1990 Head, Astrochemistry Branch, GSFC

Professional Societies

• American Geophysical Union
• American Astronomical Society - Division of Planetary Sciences
• Washington Academy of Science (Fellow)
• American Chemical Society
• American Physical Society
• Sigma XI
• Royal Society of Chemistry

Awards

• Special Achievement Award - 1978
• Group Achievement Award - 1978
• Goddard Research and Study Fellowship - 1981
• Alumni Achievement Award, Catholic University of America - 1985
• Goddard Exceptional Achievement Award - 1997

Sabbatical Leaves

Department of Chemistry
York University, Toronto, Canada
Summer of 1971

Department of Chemistry
Queen Mary College, London University
London, England
1981-1982

Selected Publications

1997  "Temperature and Isotope Dependence of the Reaction of Methyl Radicals with Deuterium Atoms," P. N. Seakins, S. H. Robertson, M. J. Pilling, D. M. Wardlaw, F. L. Nesbitt, R. P. Thorn, W. A. Payne and L. J. Stief, J. Phys. Chem. in press.

1996  "Experimental 300 K Measurement of the Rate Constant of the Reaction OH+BrO Æ Products," ; D. J. Bogan, R. P. Thorn, F. L. Nesbitt and L. J. Stief, J. Phys. Chem. 100, 14383.

1996  "Rate Constant and Product Branching for the Vinyl Radical Self Reaction at T = 298 K," R. P. Thorn, W. A. Payne, L. J. Stief and D. C. Tardy, J. Phys. Chem. 100, 13954.

1996  "The reaction between N(4S) and C₂H₃: rate constant and primary reaction channels," W. A. Payne, P. S. Monks, F. L. Nesbitt and L. J. Stief, J. Phys. Chem. 104, 9808.

1995  "Photoionization Man Spectrometric Study of HOI: Photoionization Efficiency Spectrum and Ionization Energy," P. S. Monks, L. J. Stief, D. C. Tardy, J. F. Liebman, Z. Zhang, S. C. Kuo and R. B. Klemm, J. Phys. Chem. 99, 16566.

1995  "The Reaction O + HOBr: Temperature Dependence of the Rate Constant and Importance of the Reaction as an HOBR Stratospheric Loss Process," F. L. Nesbitt, P. S. Monks, W. A. Payne, L. J. Stief and R. Toumi, Geophys. Res. Lett., 22, 827.

1994  "A Discharge-Flow Photoionization Mass Spectrometric Study of the HOBr(X1A): Photoion Yield Spectrum, Ionization Energy and Thermochemistry," P. S. Monks, L. J. Stief, M. Krauss, S. C. Kuo and R. B. Klemm, J. Chem. Phys. 100, 1902.

1993  "The Kinetics of the Formation of Nitrile Compounds in the Atmospheres of Titan and Neptune," P. S. Monks, P. N. Romani, F. L. Nesbitt, M. Scanlon and L. J. Stief, J. Geophys. Res. 98, 17, 115.

1993  "The Reaction of Atomic Hydrogen with Germane: Temperature Dependence of the Rate Constant and Implications for Germane Photochemistry in the Atmospheres of Jupiter and Saturn," D. F. Nava, W. A. Payne, G. Marston, and L. J. Stief, J. Geophys. Res. 98, 5531.