Physics - Sciene

Both analysis and synthesis approaches of optimization method are used in the present work to finding the optimum design of magnetic and electrostatic deflectors which give rise to the minimum spherical and chromatic aberration. In magnetic deflector calculations, the synthesis approach is used; the saddle yoke deflection coil is used as the source of magnetic field, then some axial field distribution models are to be used and new field distribution model to be suggested. The moving objective lens concept is included in the computation of deflection field.

A systematic study of isotope chains in the rare–earth region is presented. For the chains 144 −154 60 , , , and energy levels, E2 transition rates, and two–neutron separation energies (S Nd −16014662

 This work investigates the joining between graphite and stainless steel grade (410), by using active filler metal paste. Brazing technique was chosen because it is efficient, verstile, fast and economical. High purity of metal powder of  silver, copper  and titanium in different concentrations were mixed carefully to prepare a filler paste. Stainless steel and graphite as a cubic shape were prepared to study both wetting and bonding behaviour as a function of essentially of furnace temperature.