Etchable track lengths of 3.56 GeV Pb-208 ions in nine different diele
ctric materials, namely CR-39 cellulose nitrate, Lexan, Mica, Makrofol
-E, Makrofol-N, Triafol-BN, Triafol-TN and X-ray film base, have been
determined. The accuracy of the etchable track lengths has been determ
ined and the values are compared with theoretical data obtained from c
omputer codes (1) RANGE (2) TRIM and (3) the program of Henke and Bent
on.