Detection technique for micrometeoroids using impact ionization

Auer, A.; Sitte, K.

doi:10.1016/0012-821x(68)90013-7

Cited by 58 publications

(35 citation statements)

References 5 publications

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“…The charge yield has been characterized in the laboratory over wide ranges of mass and velocity using dust accelerator facilities (e.g., Auer, 2001;Auer & Sitte, 1968;Burchell et al, 1999;Dietzel et al, 1973;Friichtenicht, 1962;Iglseder & Igenbergs, 1987). The charge yield has been characterized in the laboratory over wide ranges of mass and velocity using dust accelerator facilities (e.g., Auer, 2001;Auer & Sitte, 1968;Burchell et al, 1999;Dietzel et al, 1973;Friichtenicht, 1962;Iglseder & Igenbergs, 1987).…”

Section: Introductionmentioning

confidence: 99%

Magnetic Field Effect on Antenna Signals Induced by Dust Particle Impacts

et al. 2020

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The Radio and Plasma Wave Science instrument on Cassini has observed fewer than expected dust particle impacts during the mission's Grand Finale orbits. The relatively strong magnetic field in the close vicinity of the planet has been suggested to affect the intensity of the dust impact generated signals. A laboratory investigation is performed using dust particles accelerated to ≥20 km/s speed impacting onto a previously developed model of the spacecraft and the Radio and Plasma Wave Science antennas. The external magnetic field is generated by two sets of magnetic coils. The recorded antenna waveforms are decomposed into contributions from the electrons and ions of the dust impact generated plasma cloud. A good qualitative understanding of the waveforms is achieved by dividing the electron and ion population into two portions: one that is escaping from the spacecraft and another that is collected by the spacecraft. The experimental results show that the part of the signal corresponding to escaping electrons is affected by the magnetic field and that dust impact signals can be significantly reduced for spacecraft floating potentials close to zero.

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Section: Introductionmentioning

confidence: 99%

Magnetic Field Effect on Antenna Signals Induced by Dust Particle Impacts

et al. 2020

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“…where t r is the rising time of the target signal, Q is the charge collected on the target, m and v are the mass and the speed of the incident dust particle, respectively (Friichtenicht and Slattery, 1963;Auer and Sitte, 1968). The parameters c g , c r , α, β, have been determined by calibration experiments using a van de Graaff accelerator at the Max Planck Institute for Nuclear Physics in Heidelberg: c g = 7.6 × 10, c r = 5.50 × 10 −5 , α = −1.44, β = 3.91.…”

Section: Principle Of Measurementmentioning

confidence: 99%

A future observational plan of dust particles around the Moon by LDM (Lunar Dust Monitor) onboard the orbiter of the next Japanese lunar mission

et al. 2011

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This paper describes our future observation of the dust environment around the Moon by the Lunar Dust Monitor (LDM) to increase our knowledge regarding how the dust inflow and outflow contribute to lunar surface materials. Dust observation in lunar orbit is of great significance to better understand the source of supply of lunar materials, the evolution of lunar regolith, ejecta escaped from the Moon's gravitational sphere, and the inflow dust related to meteor streams. Although there have been several past missions of dust observation around the Moon, the origins of the observed dust particles in those missions could not be identified due to low statistics of dust flux or low accuracy of determining their arrival directions. To quantitatively study dust particles around the Moon, we need further data for improved statistics. In a feasibility study, we propose the instrumentation of a LDM that can measure the mass and speed of dust particles with a large detection area of 0.04 m 2 . With this LDM, we aim at quantitatively studying dust particles around the Moon, inclusive of interplanetary dust, β meteoroids, interstellar dust, and possibly lunar dust that originate from the surface materials of the Moon. In this paper, we summarize the significance of dust particles around the Moon and report an overview of our instrument proposed for the next Japanese lunar mission SELENE-2.

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“…This spectrum is the average of 12 individually calibrated, single-shot spectra. Ions of sodium and potassium, common contaminants both in laser-and impact-generated ions, 16,36 are observed. Also present is a small but reproducible aluminum ion peak, the source of which is unknown.…”

Section: Performance Evaluationsmentioning

confidence: 99%