Frequency dependence of ion bombardment of grounded surfaces in rf argon glow discharges in a planar system
The energy distribution of positive ions incident on a grounded surface in a low-pressure argon planar rf glow discharge system has been measured as a function of excitation frequency from 70 kHz to 13.56 MHz for both capacitive and direct coupling of the rf power to the excitation electrode. The results are interpreted by taking into consideration both the transit time for the ion to traverse the sheath relative to the period of the rf excitation voltage, and the resistive or capacitive characteristics of the sheaths. The importance of system geometry and of the dc potential of the excitation electrode (as determined by external circuitry) on the maximum energy of ions incident on grounded surfaces is shown.
- Research Organization:
- IBM Research Laboratory, San Jose, California 95193
- OSTI ID:
- 5314601
- Journal Information:
- J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 58:9; ISSN JAPIA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Molecular & Chemical Physics-- Beams & their Reactions
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ARGON IONS
CHARGED PARTICLES
COLLISIONS
ELECTRIC DISCHARGES
ELECTRIC POTENTIAL
ELECTRODES
ENERGY SPECTRA
FREQUENCY RANGE
GLOW DISCHARGES
ION COLLISIONS
IONS
MHZ RANGE
PLASMA SHEATH
SPECTRA
SURFACES