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Electron microscope aperture system
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 1976 |
| Description | An electron microscope including an electron source, a condenser lens having either a circular aperture for focusing a solid cone of electrons onto a specimen or an annular aperture for focusing a hollow cone of electrons onto the specimen, and an objective lens having an annular objective aperture, for focusing electrons passing through the specimen onto an image plane are described. The invention also entails a method of making the annular objective aperture using electron imaging, electrolytic deposition and ion etching techniques. |
| File Size | 568953 |
| Page Count | 6 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19770007465 |
| Archival Resource Key | ark:/13960/t6p02zf57 |
| Language | English |
| Publisher Date | 1976-12-07 |
| Access Restriction | Open |
| Subject Keyword | Photographic Rectifiers Apertures Imaging Techniques Electron Microscopes Electrodeposition Etching Electron Sources Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Patent |
