Premium
A linear‐quadratic fit for saturation curves obtained under continuous irradiation of parallel‐plate ionization chambers
Author(s) -
Fallone B. G.,
Bencomo J. A.
Publication year - 1987
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.596050
Subject(s) - irradiation , ionization , saturation (graph theory) , quadratic equation , ionization chamber , dosimetry , materials science , physics , optics , atomic physics , computational physics , mathematics , nuclear magnetic resonance , nuclear medicine , nuclear physics , geometry , medicine , ion , quantum mechanics , combinatorics
An approximation to saturation curves of parallel‐plate ionization chambers for various gases under continuous irradiation is given. The proposed fit asymptotically agrees with Mie's set of equations for the low and the high collection efficiency regions. It is shown that this fit which, for gases containing electronegative atoms, is dependent upon a parameter obtained from physical constants agrees with measurement and with values calculated from Mie's set of equations. However, for gases containing nonelectronegative atoms, it is shown that an additional experimental parameter is required to fit the measurements.