Guiding of highly charged ions by highly ordered SiO2 nanocapillaries

被引：127

作者：

Sahana, MB ^{[1
]}

Skog, P ^{[1
]}

Vikor, G ^{[1
]}

Kumar, RTR ^{[1
]}

Schuch, R ^{[1
]}

机构：

[1] AlbaNova, Fysikum, S-10691 Stockholm, Sweden

来源：

PHYSICAL REVIEW A | 2006年 / 73卷 / 04期

关键词：

D O I：

10.1103/PhysRevA.73.040901

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report a narrow angular distribution of 0.8 degrees, close to that expected from the aspect ratio, for guiding of highly charged ions through a well-ordered, parallel SiO2 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 Ne7+ 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 degrees. The narrower angular distribution in comparison to polyethylene terephthalate capillaries is discussed and it is shown that the SiO2 results support the model of self-organized charge patches formed at the capillary entrance.

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页数：4

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