Engineering topics

Hudson, R. L.

Publications and source records attributed to Hudson, R. L..

20 records · Page 2

NASA NTRS1991

An experimental study of the sublimation of water ice and the release of trapped gases

The release of the more volatile component of the Ar/H2O, CO/H2O, and CO2/H2O mixtures presently studied during sublimation is found to occur in several discrete temperature regions; gas release correlates with IR spectrum changes of the solid ice. Relative peak intensities during warming are noted to depend on the initial gas/H2O ratio. The irradiation of CO- or CO2-containing ices respectively led to the release of CO2 and CO, as well as the initial species. The implications of these results for cometary behavior are discussed.

Hudson, R. L.↗

NASA NTRS1988

Vaporization of ices containing S2 - Implications for comets

An effort is made to ascertain whether the S2 detected in Comet IRAS-Araki-Alcock 1983d can be stored in ices during warming, and is released during the vaporization of its water ice matrix, in view of data on the UV spectrum of S2 in Ar and Kr matrices and water ice in which the ratio of matrix or molecular ice to S2 is of the order of 500:1. The results obtained support the hypothesis that the S2:H2O ratio in the solid phase may not be a predictor of the gas phase ratio. It is concluded that similar vaporization from a cometary nucleus would not release most of the S2 contained in the ice.

Moore, M. H.↗