Photomodulated thermoreflectance detection of hydrogen at elevated temperatures: a detection limit
Date
2003ISSN
0003-6951Source
Applied Physics LettersVolume
82Issue
6Pages
904-906Google Scholar check
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Laser photomodulated thermoreflectance has been used as a means of detecting, at elevated temperatures, low concentration of hydrogen using an optically thin film of palladium. Data indicate that concentrations as low as a few parts per billion can easily be detected at 100 degreesC. A semi-quantitative interpretation of the photothermal signal has been achieved using a Langmurian isothermic model. (C) 2003 American Institute of Physics.