عبدی, محمدرضا
دانشگاه اصفهان
[ 1 ] - شبیه سازی براکی تراپی رگ کرونر با استنت پرتوزای Re188 و محاسبه دز جذب شده در اندام های حیاتی نزدیک استنت
Intravascular brachytherapy is simulated with Palmaz-Schatz stent, manufactured by Cordis Co. that is radioactived with 188Re source, using the MCNPX code. Functions and dosimetric parameters, were calculated in cylindrical coordinates and results compared with the latest standards and AAPM TG-60 group offers, published experimental data and also other performed simulations with various p...
[ 2 ] - اندازه‌گیری اثرات تخریبی پرتوی گاما بر خواص فیزیکی فولاد
In the present study, the most useful stainless steels of in nuclear industry, i.e. 304, 304L and 316L were provided and laser cut into 0.5*0.5 cm dimension. The effect of radiation on physical properties of samples were investigated. Gamma irradiation on samples was done with a 60Co radioisotope to the doses of 100 and 200 kGy. The resistance of the samples was measured through the Four-Probe ...
[ 3 ] - مقایسه گسیل یونی و پرتوی ایکس سخت بین نیتروژن و آرگون در دستگاه پلاسمای کانونی نوع مدر
In this study, some characteristics of a Mather type Plasma Focus (PF) device such as a discharge current, pinch time, ion flux and hard x-ray intensity has been investigated simultaneously in argon and nitrogen gases separately for various operating gas pressures and charging voltages of capacitor bank. It was observed that pinch phenomena was energy and pressure dependent in current sheath as...
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