Secondary electron emission-capacitive probes for plasma potential measurements in plasmas with hot electrons

Journal Article · Fri May 15 00:00:00 EDT 1987 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.338338· OSTI ID:6897000

Wang, E Y; Hershkowitz, N; Diebold, D; Intrator, T; Majeski, R; Persing, H; Severn, G; Nelson, B; Wen, Y J

It is shown that a secondary electron emission-capacitive probe can determine the plasma potential when T/sub e/ greater than or equal to50 eV. The probe is wideband (1 Hz to greater than 20 MHz) and relatively simple to operate. The Phaedrus-B tandem mirror plasma where T/sub e/ --40--60 eV and napprox. =5 x 10/sup 12/ cm/sup -3/ is used to verify this technique.

• Research Organization: University of Wisconsin-Madison, Madison, Wisconsin 53706
• OSTI ID: 6897000
• Journal Information: J. Appl. Phys.; (United States), Vol. 61:10
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
PLASMA DIAGNOSTICS
ELECTRON PROBES
TANDEM MIRRORS
CAPACITANCE
ELECTRIC POTENTIAL
ELECTRON EMISSION
SECONDARY EMISSION
ELECTRICAL PROPERTIES
EMISSION
MAGNETIC MIRRORS
OPEN PLASMA DEVICES
PHYSICAL PROPERTIES
PROBES
THERMONUCLEAR DEVICES
700102* - Fusion Energy- Plasma Research- Diagnostics