Sticking efficiency of nanoparticles in high-velocity collisions with various target materials |
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Authors: | Philipp Reissaus Tomas Waldemarsson Jürgen Blum Dominik Clément Isabel Llamas Harald Mutschke Frank Giovane |
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Affiliation: | 1. Space Technologies & Applications Division, Kayser-Threde GmbH München, Wolfratshauser Str. 48, 81379, München, Germany 2. Department of Astronomy, University of Florida, Gainesville, FL, 32611, USA 3. Department of Meteorology, Stockholm University, Svante Arrhenius v?g 12, 10691, Stockholm, Sweden 4. Institut für Geophysik und extraterrestrische Physik, TU Braunschweig, Mendelssohnstr. 3, D-38106, Braunschweig, Germany 5. Diehl BGT Defence GmbH & Co. KG, Fischbachstrasse 16, D-90552, Roethenbach a. d. Pegnitz, Germany 6. Astrophysikalisches Institut der Friedrich Schiller Universit?t Jena, Schillerg?sschen 2-3, 07745, Jena, Germany 7. Naval Research Laboratory, 4555 Overlook Ave SW, Washington, DC, 20375-5320, USA
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Abstract: | In order to find reliable collector surfaces for the Mesospheric Aerosol – Genesis, Interaction and Composition (MAGIC) sounding rocket experiment, intended to collect atmospheric nanoparticles, the sticking efficiency of nanoparticles was measured on several targets of different materials. The nanoparticles were generated by a molecular beam apparatus in Jena, Germany, by laser ablation (Al2O3 particles, diameter 5–50 nm) and by laser pyrolysis (carbon particles, diameter 10–20 nm). In a vacuum environment (>10−5 mbar) the particles condensed from the gas phase, formed a particle beam, and were accelerated to ∼∼1 km/s. The sticking efficiency on the target materials carbon, gold and grease was measured by a microbalance. Results demonstrate moderate to high sticking probabilities. Thus, the capture and retrieval of atmospheric nanoparticles was found to be quantitatively feasible. |
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Keywords: | nanoparticles sticking efficiency mesopheric dust magic dust sounding rocket laser ablation laser pyrolosis noctilucent clouds NLC polar mesopheric summer echoes PMSE meteoric smoke TEM film TEM grid Al2O3 carbon particle-wall interactions aerosols |
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