Radiative decay of surface plasmons on nonspherical silver particles

Conference · Fri Jan 01 04:00:00 EST 1982

OSTI ID:5960525

Little, J W; Ferrell, T L; Callcott, T A; Arakawa, E T

We have studied the radiation emitted by electron-bombarded silver particles. Electron micrographs have shown that the particles, obtained by heating thin (5 nm) silver films, were oblate (flattened) with minor axes aligned along the substrate normal. The characteristic wavelength obtained by bombarding these particles with 15-keV electrons was found to vary with angle of photon emission. We have modeled this wavelength shift as a result of the mixture of radiation from dipole and quadrupole surface-plasmon oscillations on oblate spheroids. Experimental observations of the energy, polarization, and angular distribution of the emitted radiation are in good agreement with theoretical calculations.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5960525
• Report Number(s): CONF-8206205-1; ON: DE83014007
• Country of Publication: United States
• Language: English

Related Subjects

640301* -- Atomic
Molecular & Chemical Physics-- Beams & their Reactions
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANGULAR DISTRIBUTION
BEAMS
COLLISIONS
DISTRIBUTION
ELECTRON BEAMS
ELECTRON COLLISIONS
ELEMENTS
EMISSION
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
FILMS
KEV RANGE
KEV RANGE 10-100
LEPTON BEAMS
METALS
PARTICLE BEAMS
PARTICLES
PLASMONS
POLARIZATION
QUASI PARTICLES
SILVER
STIMULATED EMISSION
TRANSITION ELEMENTS