Transmission of electrons through insulating PET foils: Dependence on charge deposition, tilt angle and incident energy

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• 作者：D. Keerthisinghe^a ; ^{darshika.keerthisinghe@wmich.edu" class="auth_mail" title="E-mail the corresponding author} ; ^{darshinmk@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; B.S. Dassanayake^b ; S.J. Wickramarachchi^a ; N. Stolterfoht^c ; J.A. Tanis^a
• 关键词：Electron transmission ; Electron guiding ; Nanocapillaries ; Charge deposition ; Elastic and inelastic transmission
• 刊名：Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
• 出版年：2016
• 出版时间：1 September 2016
• 年：2016
• 卷：382
• 期：Complete
• 页码：67-70
• 全文大小：673 K

文摘

Transmission of electrons through insulating polyethylene terephthalate (PET) nanocapillaries was observed as a function of charge deposition, angular and energy dependence. Two samples with capillary diameters 100 and 200 nm and pore densities 5 × 10⁸/cm² and 5 × 10⁷/cm², respectively, were studied for incident electron energies of 300, 500 and 800 eV. Transmission and steady state of the electrons were attained after a time delay during which only a few electron counts were observed. The transmission through the capillaries depended on the tilt angle with both elastic and inelastic electrons going through. The guiding ability of electrons was found to increase with the incident energy in contrast to previous measurements in our laboratory for a similar PET foil.