AN EXTENDED-RANGE UNSATURATED ION-CHAMBER RADIACMETER

Authors
  1. Pattman, J.D.R.
  2. Tate, P.A.
Corporate Authors
Defence Chemical Biological and Radiation Labs, Ottawa ONT (CAN)
Abstract
In a widely used type of radiacmeter employing an unsaturated ionization chamber, the ion current varies approximately as the logarithm of the dose rate over a limited range, usually about three decades. A method to extend the logarithmic range of such a meter is described. A third electrode is employed to saturate a small part of the main ionization chamber. The saturation voltage may be obtained from the plate supply for the electrometer tube used to amplify the ionization chamber current. A meter with a useful range of five decades was constructed using this principle.
Report Number
DCBRL-431 — Previously catalogued as DSIS 65-01885
Date of publication
15 May 1964
Number of Pages
17
DSTKIM No
89-01246
CANDIS No
59178
Format(s):
Hardcopy;Originator's fiche received by DSIS

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