Mohammed Jawad Yaseen

Al-Mustansiriya University · Department of Physics

The world is actively seeking alternatives to traditional energy sources amid increasing demand for energy as a result of population growth, the development of technologies, and the environmental pollution caused by traditional energy sources and their tendency to deplete. Renewable energy sources are one of the most promising sources, mainly solar...

In this study, a modulating model for solenoid magnetic field was presented. This model describes the on axis field through its hard edginess parameter as well as its axial half of half width at half peak field. The modulating model indicates to increasing the spherical aberration at the fields from real soft boundary to hard boundary modulating mo...

In the present work, the optimization by synthesis approach in the field of charged particle optics has been followed, where a modified analytical function has been proposed to represent the axial magnetic scalar potential distribution of the charged particle lens. Thereby, the corresponding axial field distribution can be deduced which is necessar...

In the current research was to benefit from the potential of the two cylindrical electric lenses to be used in the product a mathematical model from which, one can determine the magnetic field distribution of the charged particle objective lens. With aid of simulink in matlab environment, some simulink models have been building to determine the dis...

With aid of optimization by synthesis a target analytical function has been introduced in the present work. The proposed hyperbolic secant expression has been carried out to approximate the axial magnetic field distribution. The variation of the full halfwidth (FHW) and the shape factor has been introduced to investigate their effects on the projec...

We report the conducting and transparent CdS films fabricated by the chemical spray pyrolysis technique (CSPT). The effect of gamma irradiation on the optical properties and dispersion parameters has been studied. The samples were subjected to a session of irradiation with gamma ray form Cs-137 (0.5 µCi) for 5 days. Optical absorption measurements...

This paper presents the results of the outdoor performance tests for several types of commercial photovoltaic panels. These were both single crystal and multicrystalline silicon (Si) panels as well as thin-film crystalline (CIS) and two amorphous Si devices-single junction, marked as TJ, respectively. The effects of air mass and thus solar time on...

In this theoretical paper and depend on the optimization synthesis method for electron magnetic lenses a theoretical computational investigation has been carried out to calculate the Resolving Power for the symmetrical double pole piece magnetic lenses, under the absence of magnetic saturation, operated by the mode of telescopic operation by using...

A depends on Synthesis method (inverse design method) and use two well - known mathematical models in electron optics such as Glaser’s Bell-shaped model and Grivet-Lenz model, have been used magnetic pole piece reconstruction produces from axial magnetic flux density distribution for this models to design symmetrical double pole piece magnetic elec...