Robert E. McHose

TL;DR: A photomultiplier tube comprises an evacuated envelope having therein a photocathode, an anode and a high speed electron multiplier as mentioned in this paper, which accelerates the secondary electrons towards the anode.

TL;DR: In this article, a substantially uniform layer of an alkali antimonide compound is formed on substantially all of the oxide secondary emissive surface of the primary electron discharge tube.

TL;DR: In this paper, a focusing electrode is disposed between the photocathode and the dynodes, which is capable of generating an electric field for focusing the electron emission between the primary and secondary dynodes.

TL;DR: A phototube includes a cup-shaped apertured electrode interposed between a substantially flat cathode and an electron collection electrode, coaxially secured within the recess of the Cup-shaped electrode in parallel spaced-apart facing relation to the cathode as mentioned in this paper.

TL;DR: In this article, photoelectrons are accelerated through two succeeding cavity regions in which the electron trajectories associated with the electron stream are increasingly compressed, and the electrode surface is located closely proximate to the cavity region of greatest compression to collect a maximum number of the photo-electrons.