Monte Carlo simulation of nonadiabatic expansion in cometary atmospheres - Halley

Journal Article · Thu Feb 01 00:00:00 EST 1990 · Icarus (International Journal of the Solar System); (USA)

DOI:https://doi.org/10.1016/0019-1035(90)90076-L· OSTI ID:6917099

Hodges, Jr, R R ^[1]

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1. Texas Univ., Richardson (USA)

Monte Carlo methods developed for the characterization of velocity-dependent collision processes and ballistic transports in planetary exospheres form the basis of the present computer simulation of icy comet atmospheres, which iteratively undertakes the simultaneous determination of velocity distribution for five neutral species (water, together with suprathermal OH, H2, O, and H) in a flow regime varying from the hydrodynamic to the ballistic. Experimental data from the neutral mass spectrometer carried by Giotto for its March, 1986 encounter with Halley are compared with a model atmosphere. 31 refs.

• OSTI ID: 6917099
• Journal Information: Icarus (International Journal of the Solar System); (USA), Vol. 83; ISSN 0019-1035
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COMETS
COMPUTERIZED SIMULATION
CHEMICAL COMPOSITION
EXPANSION
HALLEY COMET
MASS SPECTROMETERS
MONTE CARLO METHOD
VELOCITY
MEASURING INSTRUMENTS
SIMULATION
SPECTROMETERS
640107* - Astrophysics & Cosmology- Planetary Phenomena