Ionization front structure dependence on boundary conditions

Details Ionization front structure dependence on boundary conditions Ionization front structure dependence on boundary conditions

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....92..117m&link_type=abstract

Astronomy and Astrophysics, vol. 92, no. 1-2, Dec. 1980, p. 117-127.

Astronomy and Astrophysics

Astrophysics

3

Boundary Conditions, Gas Ionization, Hydrogen Clouds, Interstellar Matter, Ionization Cross Sections, Wave Fronts, Abundance, Cosmic Dust, Helium, Photoionization, Stellar Temperature, Trace Elements, Wave Propagation

Scientific paper

The dependence of ionization front structure on local interstellar conditions is investigated. Variations in physical and emission properties of I-fronts are evaluated for upstream temperatures from 10 to 5 x 10 to the 3rd K, front velocities from 0.1 cm/s and to 100 km/s, stellar temperatures from 10 to the 4th to 10 to the 5th K, upstream densities from 1 to 10 to the 8th per cu cm, and for a range of helium, trace element and dust particle abundances. Empirical relationships between upstream and downstream conditions across an I-front are discussed. Departures from constant pressure and constant density flows for D and R type fronts respectively are found to be small, except near strong D or strong R conditions.

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