Poly(vinyl alcohol) (PVA) films containing methyl viologen (MV2+) that colours blue upon exposure to ionizing radiation were investigated as possible dosimeters for use in radiation processing applications. In order to find the most suitable composition of the PVA-MV2+ film, different concentrations of the dye have been studied. The absorbance values at selected wavelengths, obtained from irradiation of the PVA film containing the most suitable MV2+ concentration, can be satisfactorily related to the absorbed dose over a wide range, from 50 Gy up to 40 kGy. The effects of dose, dose rate, humidity and temperature on the response of the PVA-MV2+ dosimeter film have been studied under laboratory conditions. We conclude that the PVA film containing MV2+ is a promising tool for the absorbed dose measurements in several industrial applications of ionizing radiations. (C) 2007 Elsevier Ltd. All rights reserved.
|Journal||Radiation Physics and Chemistry|
|Publication status||Published - 2007|
|Event||11th Tihany symposium on radiation chemistry - Eger, Hungary|
Duration: 26 Aug 2006 → 31 Aug 2006
Conference number: 11
|Conference||11th Tihany symposium on radiation chemistry|
|Period||26/08/2006 → 31/08/2006|