Computer Science – Performance
Scientific paper
Nov 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001esasp.495..621h&link_type=abstract
In: Proceedings of the Meteoroids 2001 Conference, 6 - 10 August 2001, Kiruna, Sweden. Ed.: Barbara Warmbein. ESA SP-495, Noordw
Computer Science
Performance
Interplanetary Dust, Mass Spectrometer, Space Instrumentation
Scientific paper
In order to analyse the elements of dust particles in space, we have been developing a reflectron-type dust TOP-MS (Time-Of-Flight Mass Spectrometer) with a curved electric field. Now we have done performance experiments of our device by impacting hypervelocity microparticles with a Van de Graaff accelerator at HIT (High Fluence Irradiation Facility, University of Tokyo), where carbon particles of 0.3-2.0 μm in diameter are accelerated up to 5-20 km/s which are comparable with the velocity of dust particles in space. The results showed the device has higher mass resolution than the system with a parallel reflecting region under the same experiment situation by factor 2 or 3. Moreover the TOF spectra showed the higher detection efficiency, and the value was 10 times higher compared to the parallel reflectron TOF-MS. These effective results are considered to be caused by a curved electric field in a reflecting region.
Hamabe Yoshimi
Hasegawa Sunao
Kawamura Tohru
Nogami Ken-Ichi
Ohashi Hideo
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