extrapolation ionization chamber


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extrapolation ionization chamber

[ik‚strap·ə′lā·shən ‚ī·ə·nə′zā·shən ‚chām·bər]
(nucleonics)
An ionization chamber so designed that volume, electrode separation, or some other factor can be varied in suitable steps for measurement purposes; the resulting measured values are plotted in appropriate form and the desired result is obtained by extrapolation of the curve.