Abstract
The effect of store for along time away from the optimum store condition for solid state nuclear track detector CR-39 was studied in this work, after irradiated by α- particles emitted from 241Am(1µCi) source with 3.5 MeV energy for 3min. The detector pieces were etched in 4N-6.25N aqueous solution of NaOH maintained at temperature 70 Co for various times from 0.75 hr – 6 hr. The results showed that the optimum condition was 5 N for aqueous solution and 3 hr for etching time at temperature 70 Co. The bulk etch rate VB and track etch rate VT and efficiency, sensitivity and the critical angle were calculated.
Highlights
The effect of store for along time away from the optimum store condition for solid state nuclear track detector CR-39 was studied in this work, after irradiated by α- particles emitted from 241Am(1μCi) source with 3.5 MeV energy for 3min
The detector pieces were etched in 4N6.25N aqueous solution of NaOH maintained at temperature 70 Co for various times from 0.75 hr – 6 hr
The results showed that the optimum condition was 5 N for aqueous solution and 3 hr for etching time at temperature 70 Co
Summary
The effect of store for along time away from the optimum store condition for solid state nuclear track detector CR-39 was studied in this work, after irradiated by α- particles emitted from 241Am(1μCi) source with 3.5 MeV energy for 3min. تأثير الخزن عمى ظروف القشط المثمى لكاشف الأثر النووي CR-39
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