ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] Lenses for precision electron optics are mainly magnetic, requiring large cylinders of soft iron to focus an electron beam. Such lenses can only be convergent, and so suffer from spherical aberration. Electrostatic lenses are sometimes used, but tend to be even more cumbersome. The advent of ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/27863
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