Aerogel-supported filament

Alkali antimonide layer on a beryllim-copper primary dynode

Anode mounting for window type Geiger-Mueller tube

Apparatus for examining samples by electron emission

Cone type dynode for photomultiplier tube

Curved gas-filled detector with avalanche of electrons, and stri

Device for detecting and locating radiations, and in particular

Electromagnetic radiation detector

Electron discharge image tube with electrostatic field shaping e

Electron discharge tube having a cup-shaped secondary electron e

Electron image device

Electron multipliers having tapered channels

Electron-optical image tube

Energy filter for a Geiger-Muller tube

Ethylene quenched multi-cathode Geiger-Mueller tube with sleeve-

Fluorescent discharge cold cathode for an image display device

Focusing structure for photomultiplier tubes

Gamma-ray compensated ionization chamber

Gateable electron image intensifier

Geiger-Mueller tube with a re-entrant insulator at opposing seal