Optical properties and axial aberration coefficients of the cathode lens in combination with a focusing lens

Autor:	M. Lenc, I. Müllerová
Rok vydání:	1992
Předmět:	Simple lens business.industry Chemistry Einzel lens Radius Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Lens (optics) Optics law Apochromat Chromatic aberration Focal length business Instrumentation Electrostatic lens
Zdroj:	Ultramicroscopy. 45:159-162
ISSN:	0304-3991
DOI:	10.1016/0304-3991(92)90047-n
Popis:	The analytical expression of the axial aberration coefficients of the cathode lens in combination with a focusing lens was derived and the values compared with those when only a cathode lens is used. For the real arrangement of the cathode lens in combination with a magnetic focusing single-polepiece lens the radius of the aberration disc is 7 nm for an electron energy of 10 eV and for an immersion ratio of 1000.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3679f3ec621c161e94f6cef285919f8c https://doi.org/10.1016/0304-3991(92)90047-n Zobrazit plný text záznamu