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Electron-stimulated desorption of D2O coadsorbed with CO2 ice at VUV and EUV energies

Lookup NU author(s): Professor Lidija Siller

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Abstract

The (C+, O+, CO+, O2+, D+, D3+) desorption yields during the (10-100 eV) electron beam irradiation of CO2 ice and of D2O adsorbed on CO2 ice were measured. Measurements of pure CO2 ice irradiated with 40-eV electrons suggest that pores in the CO2 are responsible for trapping molecular precursors for bimolecular reactions that are responsible for O2+ production. Investigations of pure CO2 ice irradiated with a 100-eV electron reveals production of O2+ by a second channel. It was found that D2O adsorbed on solid carbon dioxide at 30 K diffuses into solid CO2 due to exposure to the electron beam irradiation. Without radiation, D2O stays on the top of the CO2 ice.


Publication metadata

Author(s): Siller L, Sieger MT, Orlando TM

Publication type: Article

Publication status: Published

Journal: Journal of Chemical Physics

Year: 2003

Volume: 118

Issue: 19

Pages: 8898-8904

ISSN (print): 0021-9606

ISSN (electronic): 1520-9032

Publisher: American Institute of Physics

URL: http://dx.doi.org/10.1063/1.1566931

DOI: 10.1063/1.1566931


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