Inelastic guiding of electrons in polymer nanocapillaries

Journal Article · Mon Oct 15 04:00:00 EDT 2007 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.76.042716· OSTI ID:21020736

Das, S; Dassanayake, B S; Winkworth, M; Baran, J L; Tanis, J A ^[1]; Stolterfoht, N ^[2]

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1. Department of Physics, Western Michigan University, Kalamazoo, Michigan 49008 (United States)
2. Hahn-Meitner-Institut Berlin GmbH, Glienickerstr. 100, D-14109 Berlin (Germany)

Electron transmission through insulating polymer nanocapillary (diameter 200 nm and aspect ratio 50) foils has been investigated for incident energies 500 and 1000 eV. Significant intensities of transmitted electrons were observed for foil tilt angles up to {approx}10 deg., and corresponding observation angles with respect to the incident beam direction, a phenomenon referred to as guiding. The transmitted electron spectra show substantial energy losses that increase with the capillary tilt angle, in sharp contrast to previous results for slow positive ions and lower energy electrons. Despite apparent close encounters with the capillary walls, inelastically scattered electrons are found to be guided at angles coinciding with elastically scattered electrons. These results suggest a means to study the dynamics of electron interactions with insulating materials, which is complicated by charge buildup in conventional surface scattering studies.

• OSTI ID: 21020736
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 4 Vol. 76; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
BEAMS
BUILDUP
CATIONS
ELECTRON SPECTRA
ELECTRONS
EV RANGE 100-1000
FILMS
FOILS
INELASTIC SCATTERING
INTERACTIONS
NANOSTRUCTURES
POLYMERS
SCATTERING
SURFACES
TRANSMISSION