Computer Science
Scientific paper
Dec 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991hrkd.book.....s&link_type=abstract
Heiße Reaktionen in Kometenanalogmaterialien durch Vakuumultraviolett-Photonen., by Sauer, M.; Roessler, K.. Forschungszentrum
Computer Science
1
Scientific paper
The effects of vacuum-ultraviolet (VUV) photon irradiation on solid components of comet simulation experiments KOSI were studied in view of the behaviour of the nucleus in the solar radiation field. Among the substances were typical minerals and organic solids. The vacuum of the irradiation chamber amounted to 2×10-7mbar, when cooling the samples to 77K. A VUV-lamp was used in the wavelength region between 110 and 300 nm. The proper VUV wavelength region between 110 and 170 nm could be filtered out in order to study the effects of hot H, C and N atoms formed via photodissociation by the high energetic photons. The maximum irradiation time of 6 h gave rise to radiation doses of several 100 eV per C or Si-atom of the substrate. Volatile fragments or new products were detected by mass spectrometry. The solid residues were analyzed by FT-IR spectrometry in reflectance and gas chromatography after heating at 150°C.
Roessler Kurt
Sauer Martin
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