Multiple chamber ionization detector

Details Multiple chamber ionization detector Multiple chamber ionization detector

1978-11-09

1981-07-21

Anderson, Bruce C.

Radiant energy

Invisible radiant energy responsive electric signalling

Including a radiant energy responsive gas discharge device

340629, G01T 118

Patent

active

042800528

ABSTRACT:
The detector uses a single radioactive source, such as a beta ionization source, with a multiple chamber construction. The source is positionable relative to the center or node electrode to provide simple adjustment of ionization in each chamber of say a dual chamber detector. Adjustment may be achieved without altering the geometric volume of the chambers or electrode spacing, but instead by altering the ratio of the source area protruding into each chamber. In one embodiment the center or node electrode is fixed and the source is adjustable in a direction normal to the electrode or by tilting relative to the electrode. In another embodiment the source is fixed and the electrode is adjustable relative to the position of the source. The principles may also be embodied in a three-chamber detector.

REFERENCES:
patent: 2824246 (1958-02-01), Keller
patent: 2981840 (1961-04-01), Nahmias
patent: 3295121 (1966-12-01), Meyer
patent: 4021671 (1977-05-01), Solomon

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