1. Laboratory charging of dust by electrons and ions
- Creator:
- Švestka, J., Grün, E., Pinter, S., and Schumacher, S.
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- space research, interplanetary dust, and laboratory charging of dust
- Language:
- Czech
- Description:
- Dust particles of sizes between 1 micron and 100 microns from various materials have been contained with help of quadrupole field in vacuum chamber at pressures from 10^-4 to 10^-6 mbar and charged by Ar^+ ions of energies up to 3 keV as well as by electrons of energies up to 5 keV. For damping of particles motion at low pressures the damping system with photomultipliers and feedback circuits was developed. By charging with Ar^+ ions charge-to-mass ratios up to 4 C kg^-1 were measured and dependence of maximum charge-to-mass ratio on the energy of ions was studied. Measurements of parameters of secondary electron emission by charging with electrons at different chamber pressures were started.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public