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46. The störmertron

Published online by Cambridge University Press:  18 July 2016

Willard H. Bennett
Willard H. Bennett*
Affiliation:
U.S. Naval Research Laboratory, Washington, D.C., U.S.A.

Extract

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A tube has been developed in which the shapes of streams of charged particles moving in the earth's magnetic field can be produced accurately to scale. The tube has been named the Störmertron in honor of Carl Störmer who calculated many such orbits. New developments which have made this tube possible include a method for coating the inside of large glass tubes with a transparent electrically conducting film, and an electron gun producing gas-focused streams in less than ½ micron of mercury vapor, a nearly vapor-free grease joint, and a nearly vapor-free carbon black. The magnetic dipole field of the earth is simulated with an Alnico magnet capped with properly shaped soft iron caps. The stream is deflected using two pairs of yoke coils near the gun.

Type
Part V: Electromagnetic State in Interplanetary Space
Information
Symposium - International Astronomical Union , Volume 6: Electromagnetic Phenomena in Cosmical Physics , 1958 , pp. 446 - 447
Copyright
Copyright © Cambridge University Press 1958