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Title: Guiding of highly charged ions by highly ordered SiO{sub 2} nanocapillaries

Abstract

We report a narrow angular distribution of 0.8 deg., close to that expected from the aspect ratio, for guiding of highly charged ions through a well-ordered, parallel SiO{sub 2} nanocapillaries target. These capillaries were obtained by thermally oxidizing a 25-{mu}m-thick membrane of silicon nanocapillaries fabricated by photoassisted electrochemical etching. The diameter of the uniformly distributed capillaries was 100 nm. We observed Ne{sup 7+} ions being transmitted through these nanocapillaries with a decreasing transmitted intensity up to a factor 100, when increasing the capillary tilt angles up to 4 deg. The narrower angular distribution in comparison to polyethylene terephthalate capillaries is discussed and it is shown that the SiO{sub 2} results support the model of self-organized charge patches formed at the capillary entrance.

Authors:
; ; ; ;  [1]
  1. Atomic Physics, Fysikum, AlbaNova, S-10691 Stockholm (Sweden)
Publication Date:
OSTI Identifier:
20787040
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 73; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevA.73.040901; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; 36 MATERIALS SCIENCE; ANGULAR DISTRIBUTION; ASPECT RATIO; CAPILLARIES; CATIONS; COMPARATIVE EVALUATIONS; ELECTROCHEMISTRY; ETCHING; MEMBRANES; MULTICHARGED IONS; NEON; OXIDATION; POLYESTERS; SILICA; SILICON; SILICON OXIDES; SURFACES

Citation Formats

Sahana, M. B., Skog, P., Vikor, Gy., Kumar, R. T. Rajendra, and Schuch, R. Guiding of highly charged ions by highly ordered SiO{sub 2} nanocapillaries. United States: N. p., 2006. Web. doi:10.1103/PHYSREVA.73.0.
Sahana, M. B., Skog, P., Vikor, Gy., Kumar, R. T. Rajendra, & Schuch, R. Guiding of highly charged ions by highly ordered SiO{sub 2} nanocapillaries. United States. doi:10.1103/PHYSREVA.73.0.
Sahana, M. B., Skog, P., Vikor, Gy., Kumar, R. T. Rajendra, and Schuch, R. Sat . "Guiding of highly charged ions by highly ordered SiO{sub 2} nanocapillaries". United States. doi:10.1103/PHYSREVA.73.0.
@article{osti_20787040,
title = {Guiding of highly charged ions by highly ordered SiO{sub 2} nanocapillaries},
author = {Sahana, M. B. and Skog, P. and Vikor, Gy. and Kumar, R. T. Rajendra and Schuch, R.},
abstractNote = {We report a narrow angular distribution of 0.8 deg., close to that expected from the aspect ratio, for guiding of highly charged ions through a well-ordered, parallel SiO{sub 2} nanocapillaries target. These capillaries were obtained by thermally oxidizing a 25-{mu}m-thick membrane of silicon nanocapillaries fabricated by photoassisted electrochemical etching. The diameter of the uniformly distributed capillaries was 100 nm. We observed Ne{sup 7+} ions being transmitted through these nanocapillaries with a decreasing transmitted intensity up to a factor 100, when increasing the capillary tilt angles up to 4 deg. The narrower angular distribution in comparison to polyethylene terephthalate capillaries is discussed and it is shown that the SiO{sub 2} results support the model of self-organized charge patches formed at the capillary entrance.},
doi = {10.1103/PHYSREVA.73.0},
journal = {Physical Review. A},
number = 4,
volume = 73,
place = {United States},
year = {Sat Apr 15 00:00:00 EDT 2006},
month = {Sat Apr 15 00:00:00 EDT 2006}
}