Surface waves in nonuniform plasmas and their absorption at the localization of surface plasmons

Conference · Sat Oct 15 04:00:00 EDT 1994 · AIP Conference Proceedings (American Institute of Physics); (United States)

OSTI ID:6692810

Aliev, Y M ^[1]; Berndt, J; Schlueter, H ^[2]; Shivarova, A ^[3]

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1. Lebedev Institute, Russian Academy of Sciences, 117924 Moscow (Russian Federation)
2. Experimental Physics II, Ruhr-University, 4630 Bochum (Germany)
3. Faculty of Physics, Sofia-University, 1126 Sofia (Bulgaria)

Plasma produced by traveling surface waves are connected with density nonuniformities both in radial direction and in axial direction. Radial density profiles may lead to plasmon excitation close to the discharge tube walls and thus increased energy transfer to the plasma. Here the effect of axial plasma inhomogeneity is considered. In the geometrical optics approach---usually employed for models of this type of plasmas---at the end of the discharge resonant behaviour is expected, though the validity of approximation fails. The resonance is investigated on the basis of a second-order and one-dimensional differential equation for the distribution of the electromagnetic surface wave field along a plane plasma-vacuum interface, assuming an axially linear density profile as often observed. Enhancement of electric field strength, storage of surface charge density, and strong absorption can be expected in the region of spatial localization of surface plasmons. The strength of the resonance is noticeably affected by collisions.

• OSTI ID: 6692810
• Report Number(s): CONF-9304112--
• Conference Information: Journal Name: AIP Conference Proceedings (American Institute of Physics); (United States) Journal Volume: 289:1
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700340* -- Plasma Waves
Oscillations
& Instabilities-- (1992-)
ABSORPTION
CHARGE DENSITY
DIFFERENTIAL EQUATIONS
ELECTRIC DISCHARGES
ELECTRIC FIELDS
ELECTROMAGNETIC RADIATION
EQUATIONS
ONE-DIMENSIONAL CALCULATIONS
PLASMA
PLASMONS
QUASI PARTICLES
RADIATIONS
RESONANCE
SORPTION
WAVE PROPAGATION