Tel.: +172-33-2480 Email: or and Shingo Terashima, Graduate School of Health Sciences, Hirosaki University, 66-1 Hon-cho, Hirosaki, Aomori 036-8564, Japan. *Corresponding authors: Akira Iwasaki, 2-3-24 Shimizu, Hirosaki, Aomori 036-8254, Japan. 4 Technology of Radiotherapy Corporation, 2-1-2 Koishikawa, Bunkyo-ku, Tokyo 175-0092, Japan.3 Department of Radiology, Aomori City Hospital, 1-14-20 Katta, Aomori 030-0821, Japan.2 Graduate School of Health Sciences, Hirosaki University, 66-1 Hon-cho, Hirosaki, Aomori 036-8564, Japan.Conclusively the feasibility of utilizing PVA/Cu 2O composite films as radiation detector and personal dosimeter would be applicable in rural sectors and low economic countries. The energy band gap of the film decreased as the radiation dose increases from 3 × 10 −12 to 2 × 10 −12 e V. unit) at 1 Gy to 0.4 (a u) at 12 Gy with sensitivity at 0.06 mGy.
The optical density of films increases linearly and significantly (R 2 = 0.9) as the dose increases from 0.06 (arb. The analysis revealed a gradient change in color of films from light pink to dark brown with absorption peaks at 215 and 415 nm through entire doses which were increase as dose increment. The pealed films were enveloped after drying and receiving radiation doses of 1, 2, 4, 6 … 12 Gy.
The films were made by casting in petri dishes contained 20 ml/each. The method adapted from solving of 5% PVA in hot (80 ☌) stirred water and after cooling to ambient temperature a 0.5 g of Cu 2O dissolved and stirred for 2 h. The aim of the current study was to synthesize polyvinyl alcohol Cuprous Oxide composite films (PVA/Cu 2O) for radiation detection depending on optical changes.
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