THE DETERMINATION OF DOSE AS A FUNCTION OF DEPTH BY DECONVOLUTION OF THE GLOW CURVE USING THICK TL DOSIMETERS

The extended glow curve generated on heating a thick TL dosemeter cont ains information about the distribution of dose in the mass. A method is described through which the one-dimensional distribution of dose is determined. The method involves irradiation on alternate ends of the dosemeter and construction of a matrix of interpolated glow curves rep resenting the light which would be emitted from each elemental mass as a function of time. The method is general in that it applies to any g low curve shape and any heating profile. Operation of the method invol ves deconvolution of the data to report the result The Marquardt algor ithm has been used to demonstrate the operation of the method for pene trating gamma rays, monoenergetic X rays, and fast electrons from a Va n de Graaff accelerator.