Dr. Ashraf Ali

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

Phone: (301) 286-1553

email: Ashraf.Ali@gsfc.nasa.gov

Present Position:
Principal Scientist, Raytheon STX
Astrochemistry Branch
Laboratory for Extraterrestrial Physics
NASA Goddard Space Flight Center
Research Area Experience:
Chemistry (Potential Energy Surfaces and Dynamics) of formation of inorganic and organic small solid-state structures from the gas phase species in astrophysical objects, and molecular basis of phase transition. Thermodynamics of small systems of clusters. Experimental elucidation of temperature and structure and phase in gas-phase isolated micro-cluster. Dynamics of energy transfer and atomic and molecular collisions. Chemical non-mass-dependent isotopic fractionation during the formation of grains and surfaces in the early solar system. Application of atomic and molecular beam techniques and high-resolution laser mass spectroscopy in these and related areas.
Education:
1973 - B.Sc., Honors in Chemistry, University of Calcutta
1975 - M.Sc., Physical Chemistry, University of Calcutta
1983 - Ph.D., Chemical Physics, Indian Institute of Technology, Kanpur, India
Previous Positions:
1995 - present: Principal Scientist, Raytheon/Hughes STX,
Astrochemistry Branch, NASA Goddard Space Flight Center

1991- 1994: Senior Scientist, Hughes STX,
Astrochemistry Branch, NASA Goddard Space Flight Center

1989 - 1991: Research Scientist, Ames Laboratory,
Department of Energy, Iowa State University, Ames, IA

1987 - 1989 : Research Fellow, Arthur Amos Noyes Lab. of Chemical Physics,
California Institute of Technology, Pasadena, CA

1985 - 1987: Research Associate, Department of Chemistry,
The Johns Hopkins University, Baltimore, MD

1983 - 1985: Postdoctoral Fellow, School of Chemical Sciences,
University of Illinois, Urbana, IL
Professional Societies:
American Astronomical Society
American Physical Society
American Chemical Society
ACS Division of Physical Chemistry
Selected Publications:

"Population Densities of Triplet Excited States in a Diffuse Nitrogen Plasma," A. Ali, U. K. Roychowdhury, and P. K. Gosh, J. Physique 1979, 40, 129.

"State-Resolved Study of Collisional Energy Transfer Between A2v=7 and X2+v=11 Rotational Level of CN," N. Furio, A. Ali, and P. J. Dagdigian, J. Chem. Phys. 1986, 85, 3860.

"Collisionless and Collision-Induced B - X Emission From Laser Excited CN A2v=10 Rotatinal Levels," A. Ali, G. Jihua, and P. J. Dagdigian, Chem. Phys. Lett. 1986, 131, 331.

"State-Resolved Inelastic Cross-Sections from CN A2v=8 to x2+v=12. Quenching of the Even-Odd Alternation in the Final Rotational State Populations," A. Ali, G. Jihua, and P. J. Dagdigian, J. Chem. Phys. 1987, 87, 2045.

"Rotational Energy Transfer Within the B3gv=3 Manifold of Molecular Nitrogen," A. Ali and P. J. Dagdigian, J. Chem. Phys. 1987, 87, 6915.

"Laser Excitation of the Overlapping CN, B - A(8,7) and B - X(8,11) Bands: The Relative Phase and Magnitude of the B - A and B - X Transition Moments," N. Furio, A. Ali, P. J. Dagdigian, and H. J. Werner, J. Mol. Spectroscopy 1989, 134, 199.

"A Photelectron-Photoion Coincidence Study of Fe(CO)5, " K. Norwood, A. Ali, G. D. Flesch, and C. Y. Ng, J. Amer. Chem. Soc. 1990, 112, 7502.

"A Photelectron-Photoion Coincidence Study of H2O, D2O, and (H2O)2," K. Norwood, A. Ali, and C. Y. Ng, J. Chem. Phys. 1991, 95, 8029.

"Inorganic Dust Formation in Astrophysical Environments," A full session was devoted to the discussion on current status. Some problems in cosmochemistry. A discussion and responses, A. Ali, in Faraday Discussions (invited): Chemistry and Physics of Molecules and Grains in Space, Organizing Committee: P.J. Sarre, D. Field, S. Leach, I.W.M. Smith, J. Tennyson, and D.A. Williams, The Royal Society of Chemistry, Cambridge, UK, 109, page 372-380 1998.
Last Updated:
Thursday, 21 August 2003 at 09:47:32 EST