Spectroscopy of irradiated ices of astrophysical interest

Details Spectroscopy of irradiated ices of astrophysical interest Spectroscopy of irradiated ices of astrophysical interest

Aug 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004phdt.........7t&link_type=abstract

Thesis (PhD). UNIVERSITY OF GUELPH (CANADA), Source DAI-B 65/02, p. 812, Aug 2004, 190 pages.

Computer Science

Scientific paper

After H2, CO and CO2 are amongst the most common molecules in stellar and interstellar environments. Indeed, they are often dominant components in icy mantles of comets and interstellar dust grains. These ice mantles are subject to a varying degree of cosmic radiation, leading to chemical alterations. This thesis presents a study of the IR absorption spectrum (1900 4000 cm-1) of proton- irradiated CO and CO2 thin films. The spectra of the irradiated CO films display several features arising in the vicinity of the CO fundamental which are attributed to carbon oxides such as CnO and C nO2 for n ≤ 7. The formation mechanisms of carbon chains in interstellar environments are of interest since carbon chains (or molecules derived from them) have been considered to be carriers of some of the diffuse interstellar bands. The spectra of UV or proton-irradiated CO 2 films are found to be qualitatively the same and only reveal the formation of CO and CO3. The irradiation of a CO film leaves a residue layer upon the substrate. The spectrum of a subsequent CO sample deposited above this residue presents a very striking example of the Christiansen effect. A Mie calculation is presented which models the resulting perturbation to the spectrum.

Affiliated with

Also associated with

No associations

Rating

Spectroscopy of irradiated ices of astrophysical interest does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Spectroscopy of irradiated ices of astrophysical interest, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectroscopy of irradiated ices of astrophysical interest will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1098012