Synthesis and Optimization of Polymer Film Detector (PVACu2O) in Radiation Therapy

الموضوعات

علوم بحتة وطبيعية

الملخص

Ionizing radiation has been utilized in different medical fields such as diagnosis, treatment of diseases and scientific researches based on the induced effect that occur in different types of human cells; no doubt or debate, it could induce certain effect in many applicable medical materials and even the materials used for radiation measurement and detection.In radiation therapy, for the high secured accuracy of radiation therapy dose should not exceed ± 5% of the prescribed tumor dose. To achieve that goal, an effective tool should be used for analyzing and mapping the radiotherapy treatments for cancer patients. So polymer-gel and film dosimeters have been introduced and considered depending on physical and chemical changes that occur in the polymer after irradiation.The aim of the current study was to synthesize polyvinyl alcohol cuprous oxide composite films (PVA/Cu2O) for radiation detection depending on optical changes.The method adapted from solving of 5% PVA in hot (80 ˚C) stirred water and after cooling to ambient temperature a 0.5 gram of Cu2O dissolved and stirred for 2 hours. The films were made by casting in petri dishes contained 20 ml/each.The pealed films were enveloped after drying and receiving radiation doses of 1, 2, 4, 6 … 12 Gy. 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 optical density of films increases linearly and significantly (R2 = 0.9) as the dose increases from 0.06 (arb. unit) at 1 Gy to 0.4 (a u) at 12 Gy with sensitivity at 0.06 mGy.The energy band gap of the film decreased as the radiation dose increases from 3×10-12 to 2×10-12 eV.Conclusively; the feasibility of utilizing PVA/Cu2O composite films as radiation detector and personal dosimeter would be applicable in rural sectors and low economic countries.

روابط وملفات

التعريف والنوع

رقم الوثيقة

0a00a363-2d7e-4d5e-b69e-a0539eaa797e

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل دكتوراة

نوع الملف

pdf text

أسماء الملفات

1629010_1.pdf, 1629010_2.pdf, 1629010_3.pdf, 1629010_4.pdf, 1629010_5.pdf, 1629010_6.pdf

بيانات النشر

ترجمة العنوان

تصنيع و ضبط كواشف أفلام البوليمر(PVA\Cu2O) في العلاج بالأشعة

ألقاب المؤلفين

[{"name_ar":"عماد الدين عبدالجابر","title_ar":"اعداد","title_en":"Preparation"},{"name_ar":"محمد احمد علي","title_ar":"اشراف","title_en":"Supervision"}]

اللغة

English

المصدر والدورية

اسم المصدر

Synthesis and Optimization of Polymer Film Detector (PVACu2O) in Radiation Therapy

المحتوى والصفحات

عدد الصفحات

0

إشراف وإعداد

الإشراف

محمد احمد علي

الإعداد

عماد الدين عبدالجابر

الاقتباسات الببليوغرافية