Physics
Scientific paper
Oct 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..918m&link_type=abstract
EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.918
Physics
Scientific paper
In situ measurements, the direct interception and analysis of dust particles by spacecraft-based instrumentation, allows us to gain insights into the dynamical, physical and chemical properties of solar system dust. The methods yielding the highest sensitivity for detection of dust particles in space, rely on impact ionisation. To cover a sufficiently big energy range for the investigation of dust particle impacts and the calibration of impact ionisation instruments, we attempted to complement the particle impact experiments with laser ionisation. Therefore it was necessary to investigate the properties of both processes with respect to their comparability. The findings of this study show that, in general, laser ionisation plasma is not comparable to that generated by hypervelocity particle impacts. However, particular aspects of the the laser ionisation process can be used as a rough substitute for particle impacts, i.e. optimising and testing electronic components for impact ionisation instruments.
Grün Eberhard
Kempf Sascha
Mocker Anna
Srama Ralf
Sternovsky Zoltan
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