مشاركة
حسابات الامثلية لمنظومة مغاطيسية تتالف من حارف وعدسة == A Computational Optimization of Magnetic System Consists of Deflector and Lens
اسم المؤلف:
احمد حسين علي
اسم المشرف:
احمد كمال احمد | عدي علي حسين
الموضوع العام:
علوم الفيزياء
السنة:
2008
الموضوع الدقيق:
الفيزياء
الدرجة:
ماجستير
الجامعة:
جامعة النهرين - كلية العلوم - قسم الفيزياء
اللغة:
الانكليزية
مكان الجامعة:
بغداد
الصفحات الاولى:
26T1761 - p.pdf
المستخلص:
A computation investigation on the design of magnetic deflection and focusing system using the synthesis approach of optimization method has been done. By solving the paraxial ray equation using the Range - Kutta - Nystrom method the trajectories of the electron beam and the optical properties of the magnetic deflection and focusing system under infinite and zero magnification conditions has been computed.The synthesis approach of optimization method is used in the present work to finding the optimum design of magnetic deflection and focusing system which give rise to the minimum spherical, chromatic, spiral distortion, and radial distortion aberration.The toroidal deflection coil is used as the source of magnetic field, and then the field distribution is determined by using an exponential function. The moving objective lens concept is included in the computation of system field
