نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشکدة فیزیک، دانشگاه تبریز، تبریز
2 دانشکدة علوم پایه، دانشگاه شهید مدنی آذربایجان، تبریز
کلیدواژهها
عنوان مقاله English
نویسندگان English
An approach to obtain a maximum solid angle is the use of curved crystals. Therefore, in order to make these crystals useful in X-ray spectrometry, it is necessary to design them in such a way that they have high solid angle and reflectivity. In this paper, a nearly exact general equation for calculating the solid angle and area factor on the surface of several curved crystal geometries is extracted and compared with the previous results. Wittry and Sun's shortcut method for calculating the solid angle, and also, its trial and error method for maximizing the solid angle and introducing exact point-focusing crystal geometry is reviewed, and it is shown that for some crystal geometries are not responsive. By writing an algorithm for calculating the solid angle and the area factor for ââall of the crystal geometries, we show that they are in agreement with the results of the analytical method.
کلیدواژهها English
5. A Gholampour Azhir, S Amiri, H Khosroabadi, J Rahighi, and M Lamehi Rachti, Iranian J. Phys. Res. 15, 2, 59 (2015) 197.
غ عسکری، س ج پستهای و ع راستکار ابراهیم زاده، پنجمین همایش ملی گوهرشناسی و بلور شناسی ایران، زنجان (1397).
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