Schröder, Helmut and Riede, Wolfgang and Reinhold, Elmar and Wernham, Denny and Lien, Yngve and Kheyrandish, Hamid (2006) In situ observation of UV laser-induced deposit formation by fluorescence measurement. Boulder Damage Symposium XXXVIII, 2006-09-25-2006-09-27, Boulder,Co (USA).
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We investigated the formation of UV laser induced deposits on uncoated and coated fused silica optics under vacuum conditions in presence of outgassing materials. As contamination samples epoxy, silicone and polyurethane containing materials were used. To realize low partial pressures of the contaminants in the gas phase they were slightly heated (40°C). The formation of the depositions was monitored in situ and online by detecting the fluorescence emission of the deposits, excited by the UV laser beam. The influence of different optical coatings on the deposit formation was studied. By analysing the surface profiles of the deposits, growth rates were estimated. Time-of-flight secondary ion mass spectroscopy was used for chemical characterization of the deposits.
|Document Type:||Conference or Workshop Item (Speech)|
|Title:||In situ observation of UV laser-induced deposit formation by fluorescence measurement|
|Keywords:||Laser-induced contamination, fluorescence detection, surface analysis|
|Event Title:||Boulder Damage Symposium XXXVIII|
|Event Location:||Boulder,Co (USA)|
|Event Type:||international Conference|
|HGF - Research field:||other|
|HGF - Program:||other|
|HGF - Program Themes:||other|
|DLR - Research area:||Aeronautics|
|DLR - Program:||L - no assignement|
|DLR - Research theme (Project):||L -- no assignement|
|Institutes and Institutions:||Institute of Technical Physics|
|Deposited By:||Dr.rer.nat. Helmut Schröder|
|Deposited On:||18 Dec 2006|
|Last Modified:||27 Apr 2009 13:20|
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