Simulation of the UV-irradiation at the martian surface for exobiology experiments

C. Kolb, P. Stimpfl, H. Krenn, H. Lammer, G. Kargl, C. S. Cockell, M. R. Patel, Gy Rontó, R. Abart

Research output: Contribution to journalConference article

Abstract

UV-radiation can act on organic/biologic matter in several ways. UV radiation can cause specific damages in the DNA-containing living sytems inducing dimers of the nucleic acid bases (pyrimidines). Under the influence of short wavelength UV exposure in the dimers a photoreversion can occur: monomerization. A further important influence is the formation of catalytically produced oxidants such as Superoxide ions and other associated species such as peroxides, because of their anticipated capability to diffuse into deeper horizons of the soil. We designed a simple radiation apparatus to simulate the solar spectrum at the Martian surface between 200 and 700 nm. The system comprises an ozone-free xenon arc lamp and special exchangeable filter-sets and mirrors to simulate the effects of the Martian atmospheric column and dust loading. A variety of devices such as filters and mirrors, which may serve to remove the IR-component of the lamp, will be discussed.

Original languageEnglish
Pages (from-to)223-224
Number of pages2
JournalEuropean Space Agency, (Special Publication) ESA SP
Issue number545
Publication statusPublished - Mar 1 2004
EventProceedings of the III European Workshop on Exo-Astrobiology - Madrid, Spain
Duration: Nov 18 2003Nov 20 2003

ASJC Scopus subject areas

  • Aerospace Engineering
  • Space and Planetary Science

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    Kolb, C., Stimpfl, P., Krenn, H., Lammer, H., Kargl, G., Cockell, C. S., Patel, M. R., Rontó, G., & Abart, R. (2004). Simulation of the UV-irradiation at the martian surface for exobiology experiments. European Space Agency, (Special Publication) ESA SP, (545), 223-224.