نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه فیزیک، دانشکده علوم پایه، دانشگاه گیلان، صندوق پستی: ۱۹۱۴-۴۱۳۳۳۵، رشت ـ ایران
2 پژوهشکده کاربرد پرتوها، پژوهشگاه علوم و فنون هستهای، صندوق پستی: 3486-11365، تهران- ایران
کلیدواژهها
عنوان مقاله English
نویسندگان English
A survey of effective factors on the response of a Fricke gel dosimeter leads to an optimum sample dosimeter with better sensitivity and lower fading in dosimetric applications. In this research, samples of PVA Fricke gel dosimeters were prepared with different concentrations of the constituents. Samples were irradiated up to 60 Gy with a gamma cell. Measurement of the samples with a spectrophotometer showed 10% PVA, atomic mass of 72000, 25 mM sulphuric acid, 0.5 mM ferrous ammonium sulphate, 0.165 mM xylenol orange, 1% glutaraldehyde and ultrapure water has the highest sensitivity. In addition, this composition provides a wider range of linear responses. Preparation of the suggested dosimeter in several groups and maintenance at different conditions, before and after irradiation, showed that the samples maintained in a dark place and refrigerator were stable for up to 10 days, whereas the samples maintained in other conditions lost their stability and started to fade.
کلیدواژهها English