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Charge evolution and energy loss associated with electron transmission through a macroscopic single glass capillary
Stockholm University, Faculty of Science, Department of Physics, The Manne Siegbahn Laboratory.
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2011 (English)In: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, ISSN 0168-583X, Vol. 269, no 11, 1243-1247 p.Article in journal (Refereed) Published
Abstract [en]

Charge (time) evolution and the angular dependence of incident electrons in the range 300-1030 eV through a single macroscopic glass capillary was studied. Charge measurements were done at a sample tilt angle of psi = 2' for observation angles 0= O' and 05 (both psi and 0 were measured with respect to the incident beam direction) at incident energies of 520.7 and 824.5 eV using a parallel-plate spectrometer. After equilibrium of transmission, electrons had lower average centroid (mean) energies than the respective primary beam values. Centroid energies of transmitted electrons at the centroid of the angular distribution (where the observation angle 0 is nearly equal to tilt angle of the sample psi) were found to decrease exponentially with increasing sample tilt angles for all the measured electron energies. This energy loss is attributed to inelastic scattering of electrons with the inner wall of the sample close to the capillary entrance. Furthermore, the centroid energies of the transmitted electron angular distributions at 520.7 eV were found to lose energy for angular positions away from the capillary axis (angular centroid position) for all tilt angles, indicating a higher degree of inelastic scattering at the edges of the angular distributions.

Place, publisher, year, edition, pages
2011. Vol. 269, no 11, 1243-1247 p.
Keyword [en]
Single-glass macrocapillary, Electron transmission, Energy loss, Electron guiding, Time evolution, Charge evolution
National Category
Physical Sciences
URN: urn:nbn:se:su:diva-67577DOI: 10.1016/j.nimb.2010.12.065ISI: 000292371100018OAI: diva2:470574
authorCount :6Available from: 2011-12-29 Created: 2011-12-29 Last updated: 2011-12-29Bibliographically approved

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Das, Susanta
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