TY - JOUR A1 - Wurster, R. A1 - Pentzien, Simone A1 - Conradi, Andrea A1 - Krüger, Jörg T1 - Characterization of laser-generated microparticles by means of a dust monitor and SEM imaging T2 - Laser chemistry N2 - Nanosecond laser (1064 nm wavelength) cleaning of artificially soiled paper as a model sample simulating a real-world artwork was performed. During the cleaning process, the ejection of particles was monitored in situ by means of a dust monitor (8 size classes, ranging from 0.3 µm to >2 µm) and ex situ using a mini-cascade impactor (MKI, 5 stages). The cleaning result was analyzed by scanning electron microscopy (SEM) considering possible laser-induced damages to the substrate. Size distributions of emitted particles were measured depending on the processing parameters: laser fluence, F, and pulse number per spot, N. High numbers of large (>2 µm) particles were collected by the mini-cascade impactor indicating a gas dynamical liftoff process. Obviously, these particles were not affected by the laser-matter interaction. The different methods (SEM, MKI, and dust monitor) are compared with respect to their usefulness for a proper interpretation of the cleaning results. PB - Harwood Academic Publ. CY - London PY - 2006 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/14467 AN - OPUS4-14467 SN - 0278-6273 SN - 1476-3516 VL - 2006 IS - Article ID 31862 SP - 1 EP - 5(?) AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany