A capacity type detector for measuring low velocity dust particles during a slow fly-by cometary mission

Details A capacity type detector for measuring low velocity dust particles during a slow fly-by cometary mission A capacity type detector for measuring low velocity dust particles during a slow fly-by cometary mission

Aug 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978ssi.....4...85p&link_type=abstract

Space Science Instrumentation, vol. 4, Aug. 1978, p. 85-100.

Physics

2

Comets, Cosmic Dust, Flyby Missions, Meteoritic Damage, Micrometeoroids, Particle Flux Density, Capacitors, Detectors, Impact Damage, Inductance, Projectiles, Transducers

Scientific paper

A thin-foil capacitor detector has been designed which responds to particle impacts with a decrease in capacitance. The capacitive decrease is reflected as a frequency increase in an associated response oscillator. Typical resonant frequencies for active sensor areas of the order of several square millimeters are 40 MHz. Frequency changes from impacts can be measured down to 20 Hz. In all experiments the angle of particle incidence was normal to the target area. It is shown that this detector is capable of recording impacts by particles with velocities as low as 700 m/s.

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