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Study of H-recombination in Aluminium foils: first irradiation tests with low-energy protons (5 keV) at the DLR Complex Irradiation Facility (CIF)

Sznajder, Maciej and Witzke, Andreas and Renger, Thomas and Geppert, Ulrich (2012) Study of H-recombination in Aluminium foils: first irradiation tests with low-energy protons (5 keV) at the DLR Complex Irradiation Facility (CIF). ISMSE-12, 24.-28. September 2012, Noordwijk, Niederlande.

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Abstract

The current DLR project GOSSAMER aims at establishing solar sails as a powerful and reliable propulsion technique for future space missions. The solar sail propulsion technique basically uses the transfer of momentum from solar photons to a large foil which has been deployed in space and is connected with a payload. The latest design of the GOSSAMER solar sail will use a thin polyimide foil covered on both sides with a 100 nm layer of Aluminium. However, the aging of the foil in a space environment, especially changes in the specular reflectance of the surface, has to be studied very carefully to ensure a proper performance of a solar sail spacecraft over long mission periods. One possible degradation effect is presented: the blistering of the Aluminium surface under proton irradiation. Protons that were stopped in a metal can recombine with free electrons to H-atoms and can finally form bubbles of H2 within in the material. It depends on several parameters whether this recombination leads to the formation of blisters at the surface of the metal: the energy of the protons, the proton dose, the thermal conditions, the solubility of hydrogen in the metal, impurities, and defects in the material. Previous published laboratory studies showed that blisters on Aluminium surfaces occur at relatively low proton energies (< 100 keV) and high dosages (1016 to 1018 protons/cm²).

Item URL in elib:https://elib.dlr.de/79738/
Document Type:Conference or Workshop Item (Poster)
Title:Study of H-recombination in Aluminium foils: first irradiation tests with low-energy protons (5 keV) at the DLR Complex Irradiation Facility (CIF)
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Sznajder, Maciejmaciej.sznajder (at) dlr.deUNSPECIFIED
Witzke, Andreasandreas.witzke (at) dlr.deUNSPECIFIED
Renger, Thomasthomas.rengerqdlr.deUNSPECIFIED
Geppert, Ulrichulrich.geppert (at) dlr.deUNSPECIFIED
Date:2012
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:H-Recombination, Blistering, Degradation
Event Title:ISMSE-12
Event Location:Noordwijk, Niederlande
Event Type:international Conference
Event Dates:24.-28. September 2012
Organizer:ESA-ESTEC
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W FR - Forschung unter Weltraumbedingungen (old)
DLR - Research area:Space
DLR - Program:W FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):W - Vorhaben Materialwissenschaftliche Forschung (old)
Location: Bremen
Institutes and Institutions:Institute of Space Systems > Systemkonditionierung
Deposited By: Geppert, Prof. Dr.rer.nat. habil. Ulrich
Deposited On:20 Dec 2012 11:46
Last Modified:31 Jul 2019 19:39

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