Theoretical study to design plasma focus machine and investigate various parameters that affect its emitted neutron yield

Other Title(s)

الدراسة النظرية لتصميم ماكنه بؤره البلازما و تحقيق العوامل المختلفة التي تؤثر على حصيلة النيترون المنبعث

Dissertant

Mahmud, Rana Isa Bk Murad

Thesis advisor

Jasim, Mustafa Kamil
Majid, Rad Hamid

Comitee Members

Salih, Haydar A.
Hashim, Intisar H.
Husayn, Bushra Jawdah

University

University of Baghdad

Faculty

College of Education for Puresciences-IBN al-Haitham

Department

Department of Physics

University Country

Iraq

Degree

Master

Degree Date

2014

English Abstract

In this work the design of a dense plasma focus based on (Lee) model theoretically achieved.

The model contains of mathematical treatments of DPF system including description of engineering configuration of system elements such as electrodes and elements of the electrical circle, which includes capacitance, inductance and resistance (RLC).

to introduce new design based on Lee program.

After the necessary calculations has been achieved, the results of design are introduced in the program to notice theoretically the extent of interoperability of the machine throughout the study of various parameters provided by the program and thus to identify the operating conditions and the factors influencing it.

Deuterium (D) was chosen as working gas in this machine to obtain high neutron output (1.66 × 108 neutron per shot ) for a fusion nuclear reaction.

The study and testing the system at two pressures (3 Torr and 4 Torr) are achieved through various parameters provided by the program and the results are compared and discussed graphically.

In addition, the designed system has been compared to a standard system that has structure similarities.

A theoretical NX2 dense plasma focus system, which was built mainly to use with noble gases to obtain X-ray, is chosen with deuterium gas to obtain neutron output for the sake of comparison where most of the operating parameters of both the designed and the standard are studied graphically and the behavior parameters of both systems such as (the tube total current, tube voltage, axial speed, axial position trajectory, radial inward shock trajectory, pinch elongation trajectory, pinch elongation speed, radial reflected shock trajectory and speed, plasma temperature with time).

The losses generated from both systems such as Joule Heat, Bremsstrahlung energy and recombination energy and line radiation energy with time is calculated and represented graphically.

Finally it is found that the designed system provides greater neutron yield (1.66 × 108 neutron per shot) higher than the standard system (5.15 × 107 neutron per shot ) .

The designed system behaves like the general systems of dense plasma focus.

The difference in the behavior of the designed and standard system comes from the geometry different of the both systems in terms of engineering electrodes and the values different of electric elements of RCL circuit.

The theoretical designed system in this research could be a project to build a machine of dense plasma focus required for nuclear fusion reaction due to its advantage of yielding high neutron.

Main Subjects

Physics

No. of Pages

96

Table of Contents

• APA
• MLA
• AMA

Language

English

Data Type

Arab Theses

Record ID

BIM-735840