English العربية کوردی

ئەز   Pshtiwan Mohammed-Amin Karim

Lecturer

Specialties

Solar Energy Physics Plasma Physics

pshtiwan.karim@uoz.edu.krd
009647501190164
Iraq , Duhok
0
Awards
4
Published Journal Articles
3
Thesis
3
Training Course

0
Book Chapter
3
Conference
0
Presentation
7
Workshop

Academic Title

Lecturer

2021-04-07

Assistant Lecturer

2011-12-12

Published Journal Articles

Science Journal of University of Zakho (Issue : 4) (Volume : 11)
DETERMINATION OF SEVERAL IMPORTANT PARAMETERS OF HOLLOW ELECTRODES ABNORMAL GLOW DISCHARGE PLASMA UNDER THE INFLUENCE OF MAGNETIC FIELD AT DIFFERENT GAS PRESSURES

This paper investigates the impact of an axial magnetic field on several plasma parameters of... See more

This paper investigates the impact of an axial magnetic field on several plasma parameters of hollow electrode argon abnormal glow discharge. The discharge is generated by applying a DC voltage ranging from 0-6KV. By varying the pressure and magnetic field strength (0-25mT), the plasma potential, frequency, and degree of ionization were measured. The plasma potential, frequency, and degree of ionization were evaluated using spectroscopic measurements of the electron temperature and density. The results of the experiment show that the plasma potential decreases as the magnetic field strength increases, while the plasma frequency increases for lower pressure but reaches a constant value for higher pressure due to the increasing number of excitation collisions among the plasma-charged particles. The degree of ionization, determined using the ideal gas law, shows a near-linear relationship with the axial magnetic field at both low and high pressure.

 2023-12
Science Journal of University of Zakho (Issue : 4) (Volume : 7)
Measurement of Some Argon Plasma Parameters Glow Discharge Under Axial Magnetic Field

This paper investigates the characteristics some of argon plasma parameters of glow discharge under axial... See more

This paper investigates the characteristics some of argon plasma parameters of glow discharge under axial magnetic field. The DC power supply of range (0-6000) V is used as a breakdown voltage to obtain the discharge of argon gas. The discharge voltage-current (VI) characteristic curves and Paschen’s curves as well as the electrical conductivity were studied with the presents of magnetic field confinement at different gas pressures. The magnetic field up to 25 mT was obtained using four coils of radius 6 cm and 320 turn by passing AC current up to 5 Amperes. Spectroscopic measurements are employed for purpose of estimating two main plasma parameters electron temperature (T e) and electron density (n e). Emission spectra from positive column (PC) zone of the discharge have been studies at different values of magnetic field and pressures at constant discharge currents of 1.5 mA. Electron temperature (T e) and its density are calculated from the ratio of the intensity of two emission lines of the same lower energy levels. Experimental results show the abnormal glow region characteristics (positive resistance). Breakdown voltage versus pressure curves near the curves of paschen and decrease as magnetic field increases due to magnetic field confinement of plasma charged particles. Also the electrical conductivity increases due to enhancing magnetic field at different gas pressures. Both temperature density of electron and the intensities of two selected emission lines decrease with increasing pressure due decreasing of mean free path of electron. Electron density increase according to enhancing magnetic field, while the intensity of …

 2019-12
2019 International Conference on Advanced Science and Engineering (ICOASE) (Issue : 01) (Volume : 01)
Study of Optical Properties of a Pinhole Nanorod

In this paper, the optical properties of a pinhole nanorod are studied using finite element... See more

In this paper, the optical properties of a pinhole nanorod are studied using finite element package (COMSOL Multiphysics). Both electric and magnetic field distribution for different radius of a hollow nanorod and variable pinhole position has been measured. Furthermore, the scattering cross-section for both fields is calculated. The magnetic field enhancement has been increased by adding a pinhole made of air. The magnetic field enhancement improved 20 percent. In case of scattering cross-section, the response is changed as a function of the pinhole position and diameter. The results provide the ability to tune optical properties through an appropriate geometric feature of the nanorods.

 2019-04
Journal of Modern Physics (Issue : 05) (Volume : 6)
Measurement of the effective dose radiation at radiology departments of some hospitals in duhok governorate

During operating of the X-ray machines, if the protection of X-ray rooms is insufficient, not... See more

During operating of the X-ray machines, if the protection of X-ray rooms is insufficient, not only the patient but also clinical staffs as well as public are exposed to high X-ray dosage and they are affected from X-ray related to the dose level. In the present survey, by testing the radiological leakage and scatter from X-rays machines in radiology departments of 7 randomly selected hospitals in Duhok governorate, the effects dose of X-ray to the both control panel area and the patients waiting or visiting area who are located near the radiography room, were measured. The dose was recorded for a range of peak kilovoltage (kVp) and mAs values to find efficiency of shielding materials (barriers) of radiography rooms for different X-rays level. The measurements were performed at one meter above the ground surface which was the same height of X-rays tube by using Gamma Scout dosimeter. From the measurement results, it was seen that the most hospitals barriers (doors and walls) were not appropriate to the standards except 2 hospitals. The maximum effective doses were measured in uncontrolled area of Khazer hospital which was 82.48 ± 0.73 mSv·yr-1 that was much more than the reference dose limits and in controlled area of Haval Banda Zaroka hospital which was 12.98 ± 0.16 mSv·yr-1. In result, the knowledge about the radiation dose affecting the radiologists and public in the selected hospitals was obtained, and by informing the radiologists and the hospitals managements, the necessary regulations would be planned.

 2015-03

Thesis

2021-04-06
Ph.D. in Plasma Physics

Effects of Laser (532) nm and Magnetic Field on Glow Discharge Plasma and Localized Surface... See more

Effects of Laser (532) nm and Magnetic Field on Glow Discharge Plasma and Localized Surface Plasmon Resonance (LSPR) Properties of Hollow Nanorods

 2021
2011-12-01
M.Sc. in Solar Energy Physics

FEASIBILITY OF USING PHOTOVOLTAIC (PV) FOR PROTECTING THE ENVIRONMENT AT DUHOK CITY

 2011
2008-07-06
B.Sc. in Physics

Lighting enables humans to go about their lives, including work and learn, as effectively as... See more

Lighting enables humans to go about their lives, including work and learn, as effectively as possible. It provides for our visual needs, and also safety and security. Lighting also has strong social and emotional significance Human needs are first and foremost. Since it's difficult to accomplish much when we can’t see well, it’s fairly obvious that lighting is crucial to human performance. This chapter addresses education, office, health, industrial, visibility and how lighting conditions might affect overall human performance. Lighting professionals must be aware of the relationships among lighting, productivity, human health, safety and security.

 2008

Conference

1st International Symposium for the International Day of Education
 2025-01
1st International Symposium for the International Day of Education

1st International Symposium for the International Day of Education) held at the College of Education, University of Zakho, where important issues related to education development and its role in society were discussed. The event provided... See more

1st International Symposium for the International Day of Education) held at the College of Education, University of Zakho, where important issues related to education development and its role in society were discussed. The event provided a wonderful opportunity to exchange experiences with academics and international experts, emphasizing the importance of innovation in education to achieve comprehensive progress. Among the key educational topics discussed were 'Enhancing Quality Education in Universities Amid Rapid Technological Advancements and the Rise of AI,' as well as 'Education in Crises and Wars: Reality, Challenges, and How to Address Them.

Bologna Process Conference Erbil
 2022-08
Bologna Process Conference-Erbil

Construct the frame working for the Bologna process in Iraqi-Kurdistan Region University

Study of Optical Properties of a Pinhole Nanorod
 2019-04
2019 International Conference on Advanced Science and Engineering (ICOASE)

In this paper, the optical properties of a pinhole nanorod are studied using finite element package (COMSOL Multiphysics). Both electric and magnetic field distribution for different radius of a hollow nanorod and variable pinhole position... See more

In this paper, the optical properties of a pinhole nanorod are studied using finite element package (COMSOL Multiphysics). Both electric and magnetic field distribution for different radius of a hollow nanorod and variable pinhole position has been measured. Furthermore, the scattering cross-section for both fields is calculated. The magnetic field enhancement has been increased by adding a pinhole made of air. The magnetic field enhancement improved 20 percent. In case of scattering cross-section, the response is changed as a function of the pinhole position and diameter. The results provide the ability to tune optical properties through an appropriate geometric feature of the nanorods.

Workshop

University of Zakho, College of Science, Department of Physics
2024-12
Keithley and spin coating

Keithley and spin coating

 2024
Zakho, Kurdistan Region-Iraq
2019-02
Joint Research Workshop on Multidisciplinary Science, Nanotechnology and Engineering

10. ''Joint Research Workshop on Multidisciplinary Science, Nanotechnology and Engineering'', held in Faculty of Science, University of Zakho, from 11 to 12 February 2019, and presented the following oral contribution

 2019
Oldenburg-Bremen-Germany
2017-12
Winter Work Shop

Winter Workshop at Oldenburg-Bremen-Germany

 2017
Zakho, Kurdistan Region-Iraq
2017-04
Second international scientific conference

Applied Science

 2017
Zakho, Kurdistan Region-Iraq
2013-09
E-Learning system design: Teacher-student websites

E- Learning

 2013
Zakho, Kurdistan Region-Iraq
2013-04
First international scientific conference

Applied Science

 2013
Zakho, Kurdistan Region-Iraq
2013-03
Nano-Porous silicon based metal semiconductor metal photo detector (MSM-PD) device

Fabrication of NANO Sample

 2013

Training Course

2015-01-03,2015-04-03
Academic Skills

Training course on teaching methods for higher education

 2015
2010-06-01,2010-09-01
Academic Skills

Training course on English

 2010
2010-01-03,2010-04-03
Academic Skills

Training course on Computer

 2010