Method of determining radiation doses by evaluating nuclear trac

Details Method of determining radiation doses by evaluating nuclear trac Method of determining radiation doses by evaluating nuclear trac

1989-05-25

1990-06-12

Hannaher, Constantine

Radiant energy

Invisible radiation responsive nonelectric signalling

Methods

2504721, G01N 2722

Patent

active

049335642

ABSTRACT:
A method of determining radiation doses by evaluation of nuclear tracks in an irradiated foil of track recording material through the use of an electrochemical etching cell which is subdivided into two chambers by the foil with the irradiated side of the foil contacted by a mixture of an etchant and a solvent and the opposite side of the foil contacted by an electrolyte and with a first electrode immersed into the mixture and a second immersed into the electrolyte, the method including the steps of: (a) applying an alternating voltage across the two electrodes establishing an electric field through the foil; (b) etching the nuclear tracks by selective exposure to the mixture for a given period of time in the presence of the electric field; (c) continuously recording the electrical capacitance between the electrodes during the performance of step (b); and (d) comparing the electrical capacitance reached after a given etching time with a calibrated value for obtaining a measure for the radiation dose.

REFERENCES:
patent: 4028207 (1977-06-01), Faktor et al.
patent: 4157473 (1979-06-01), Sohrabi
patent: 4330710 (1982-05-01), Tommasino et al.
patent: 4648950 (1987-03-01), Hankins

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