Parameters of a collisional radio-frequency sheath and dust characteristics resulting from the microparticle levitation
- Max-Planck-Institut fuer extraterrestrische Physik, D-85741 Garching (Germany)
The screening length, the time-average electric field, and the particle charge as well as the local vertical gradients of these quantities are determined experimentally within a sheath of a capacitively coupled rf, 13.56 MHz, discharge at enhanced argon gas pressures of 30, 55, and 100 Pa. The parameters are derived directly from comparative measurements of levitation positions of the particles of different sizes and variations in the levitation heights caused by formation of new dust layers. The electrostatic effect of the horizontally extended dust layers on the sheath electric field is investigated.
- OSTI ID:
- 21272743
- Journal Information:
- Physics of Plasmas, Vol. 16, Issue 10; Other Information: DOI: 10.1063/1.3251519; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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