Application of beta transmission for quality assurance of TLD tape dosemeters

Transmission of 204Tl β radiation enables measurement of differences of ± 2 mg/cm2 in thermoluminescent tape dosemeter thickness. This thickness variation gives rise to a maximum variation of ± 5% in the TL output per unit area of the dosemeters. Measurements of β transmission on dosemeter samples drawn from several batches of skived tape as well as those prepared by compressing technique have given consistent results. The β transmission method itself can be used for quality assurance and selection of a uniform set of dosemeters over thickness range 30-150 mg/cm2. (author)