Secondary Electron Emission from Dust and Its Effect on Charging

Journal Article · Tue Nov 29 00:00:00 EST 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3659778· OSTI ID:21612204

Saikia, B K; Kakati, B; Kausik, S S ^[1]; Bandyopadhyay, M ^[2]

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1. Centre of Plasma Physics, Institute for Plasma Research, Nazirakhat, Sonapur-782402, Assam (India)
2. ITER-India, Institute for Plasma Research, Bhat, Gandhinagar-382 428 (India)

Hydrogen plasma is produced in a plasma chamber by striking discharge between incandescent tungsten filaments and the permanent magnetic cage [1], which is grounded. The magnetic cage has a full line cusped magnetic field geometry used to confine the plasma elements. A cylindrical Langmuir probe is used to study the plasma parameters in various discharge conditions. The charge accumulated on the dust particles is calculated using the capacitance model and the dust current is measured by the combination of a Faraday cup and an electrometer at different discharge conditions. It is found Secondary electron emission from dust having low emission yield effects the charging of dust particles in presence of high energetic electrons.

• OSTI ID: 21612204
• Journal Information: AIP Conference Proceedings, Vol. 1397, Issue 1; Conference: 6. international conference on the physics of dusty plasmas, Garmisch-Partenkirchen (Germany), 16-20 May 2011; Other Information: DOI: 10.1063/1.3659778; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CAPACITANCE
CYLINDRICAL CONFIGURATION
DUSTS
ELECTRIC CURRENTS
ELECTROMETERS
ELECTRON EMISSION
FARADAY CUPS
GLOW DISCHARGES
HYDROGEN
LANGMUIR PROBE
MAGNETIC FIELDS
PERMANENT MAGNETS
PLASMA
PLASMA FILAMENT
TAIL ELECTRONS
TUNGSTEN
BEAM MONITORS
CONFIGURATION
CURRENTS
ELECTRIC DISCHARGES
ELECTRIC MEASURING INSTRUMENTS
ELECTRIC PROBES
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
EMISSION
EQUIPMENT
FERMIONS
LEPTONS
MAGNETS
MEASURING INSTRUMENTS
METALS
MONITORS
NONMETALS
PHYSICAL PROPERTIES
PROBES
REFRACTORY METALS
TRANSITION ELEMENTS