Photoionization and photodissociation in diffuse interstellar clouds

Journal Article · Sun Feb 01 04:00:00 EST 1981 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/158648· OSTI ID:6385857

Roberge, W G; Dalgarno, A; Flannery, B P

An accurate treatment of radiative transfer is used to explore the effects of grain scattering properties on the photoionization and photodissociation efficiencies of atomic and molecular constituents in diffuse clouds and to calculate the rates of heat deposition by photoelectric emission from grains. The observational data on ionization and dissociation are consistent with, but do not establish, a grain scattering model which is highly anisotropic at short wavelengths.

• Research Organization: Harvard/Smithsonian Center for Astrophysics
• OSTI ID: 6385857
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 243:3; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABUNDANCE
ATOMS
DISSOCIATION
ELECTROMAGNETIC RADIATION
ELECTRON EMISSION
EMISSION
HEATING
INTERSTELLAR GRAINS
IONIZATION
MOLECULES
OPACITY
OPTICAL PROPERTIES
PARTICLES
PHOTOELECTRIC EMISSION
PHOTOIONIZATION
PHYSICAL PROPERTIES
RADIATION TRANSPORT
RADIATIONS
SCATTERING
ULTRAVIOLET RADIATION