14 Result(s)

Chapter and Conference Paper

Reduction of Radiation Damage by Imaging with a Superconducting Lens System

Radiation damage is enemy number one for electron microscopical investigations of organic specimens at high resolution. Many different methods have been developed to obtain more information with a resolution b...

I. Dietrich, J. Dubochet, F. Fox, E. Knapek… in Electron Microscopy at Molecular Dimensions (1980)

Article

Reduction of radiation damage in an electron microscope with a superconducting lens system

OBSERVATION of biological specimens at high resolution by electron microscopy is limited by radiation damage. In general, structural details of non-periodical arrangements can only be identified for doses of r...

I. DIETRICH, H. FORMANEK, F. Fox, E. KNAPEK, R. WEYL in Nature (1979)

Chapter

Proposed Superconducting 3-MV Microscope

A possible construction for a 3-MV microscope with most components of the superconducting variety and operated mainly in the fixed-beam mode is outlined in the literature (Dietrich et al., 1975). Passow (1976) ha...

I. Dietrich in Superconducting Electron-Optic Devices (1976)

Chapter

Basic Principles of Electron Optics

The electron optical relations summarized in this chapter are essentially oriented toward electron microscopy. The course of the beam in a conventional transmission electron microscope is sketched in Figure 2....

I. Dietrich in Superconducting Electron-Optic Devices (1976)

Chapter

Lens Design and Testing

Different types of superconducting rotationally symmetric lenses for which field distributions have been obtained are described in the literature. The axial field measurements were usually carried out with low...

I. Dietrich in Superconducting Electron-Optic Devices (1976)

Chapter

Other Superconducting Elements for Electron Microscopy

The generator for high-voltage microscopes (V > 1MV), in general a dc machine, is the largest single element of the instrument and causes its immense height. In Toulouse the height of the instrument is about 20 m...

I. Dietrich in Superconducting Electron-Optic Devices (1976)

Chapter

Historical Survey

The possibility of applying the phenomena of superconductivity to electron optical lenses was probably first proposed by Boersch in 1934 at the Berlin Laue colloquium, after the presentation of Meissner’s pape...

I. Dietrich in Superconducting Electron-Optic Devices (1976)

Chapter

Superconducting Devices in Electron Microscopy

The improvements gained by superconducting devices in electron microscopy are due partly to the properties of the superconductors and partly to the low temperatures which must be maintained. However, the low t...

I. Dietrich in Superconducting Electron-Optic Devices (1976)

Chapter

Systems with Superconducting Lenses

Superconducting lenses have not been much used yet as condensers, intermediate lenses, and projectors in conjunction with superconducting objective lenses. Projectors are used, as in conventional electron micr...

I. Dietrich in Superconducting Electron-Optic Devices (1976)

Article

Futterverständigung bei Wespen der GattungParavespula

U. Maschwitz, W. Beier, I. Dietrich, W. Keidel in Naturwissenschaften (1974)

Chapter

Supraleitung in der Nachrichtentechnik

Anwendungsmöglichkeiten der Supraleitung in der Elektronentechnik sind selbst für den Außenstehenden augenfällig. Man denkt z.B. an die Ausnützung der elektrischen Stromleitung ohne ohmsche Verluste, der ideal...

I. Dietrich in Vorträge über Supraleitung (1968)

Article

Besprechungen

G. Lüders, Konradin Westpfahl, I. Dietrich, Rudolf Bachmann… in Naturwissenschaften (1958)