The preparation and dosimetric characteristics of three types of radiochromic nylon film dosimeter

which contain lauco dyes of pararosaniline cyanide (PR-CN)

hexahydro-xyethylpararosaniline cyanide (HPR-CN) and hexahydroxypropylpararosaniline cyanide (HPPR-CN) respectively

are outlined and comparatively studied. With a dose range of 0.5-200kGy

and high environmental stability and durability

nylon film dosimeters are more suitable for practical routine dose measurement than polyvinylbutyral (PVB) matrix film dosimeters.

In order to improve the precision a dual wavelength radiochromic multireader Model RCR-86 and a simulated dual wavelength spectrophotometric method are recommended

which cancel the deviation originated from surface reflection

scatering

geometric positioning etc.