申请人:Patel Gordhabhai N.
公开号:US20120205591A1
公开(公告)日:2012-08-16
Described is a self-indicating instant radiation dosimeter (
1001
) for monitoring high energy radiations, such as X-ray. The dosimeter contains a radiation sensitive, color changing, indicating composition (
10
), e.g., a diacetylene (R—C≡C—C≡C—R′, where R and R′ are substituents groups) or a radiochromic dye, a polymeric binder (
20
) and optionally a shelf life extender (
50
) or an activator (
40
). The radiation sensitive composition (
10
) changes color instantly when exposed to high energy radiation. The dose is estimated by comparing the color with a color reference chart or more accurately with a spectrophotometer or an optical densitometer. The radiation sensitive composition (
10
) is protected from low energy radiation such as UV light, by a layer of low energy absorbing materials, such as UV absorbers.