Presentation Information
[8a-PA1-20]Study on Low-Concentration Etching Conditions for Annealed and UV-Irradiated PADC
〇Shunnosuke Tokuda1, Ippei Ishikawa1, Shuji Kiyohara1, Atsushi Utsumi1 (1.NIT(KOSEN)Maizuru)
Keywords:
radiation education
Poly Allyl Diglycol Carbonate (PADC) is a solid-state nuclear track detector used in radiation education. However, conventional methods require long etching times and highly concentrated sodium hydroxide (NaOH) solutions.Previous studies showed that annealing and ultraviolet (UV) irradiation improve the etching characteristics of PADC. In this study, low-concentration etching of annealed and UV-irradiated PADC was investigated to improve experimental safety.PADC samples treated under the optimum conditions determined previously were etched in a 5 wt% NaOH aqueous solution. The etch pit diameter was measured using an optical microscope.The etch pit diameter reached 10 μm after 20 min of etching, which was equivalent to the result for untreated PADC etched in a 30 wt% NaOH solution. These results indicate that annealing and UV irradiation maintain sufficient etching performance even at lower NaOH concentrations, improving the safety of radiation visualization experiments.