Characterization of composite electron source
Other Title(s)
توصيف مصادر الإلكترونات المركبة
Dissertant
Thesis advisor
Fischer, Andreas
al-Musa, Marwan Sulayman
Comitee Members
al-Dumur, Hammud Abd al-Hamid
Jaradat, Imad Khalid Yusuf
al-Umari, Muhammad Ali
University
Mutah University
Faculty
Faculty of Science
Department
Department of physics
University Country
Jordan
Degree
Master
Degree Date
2016
English Abstract
This thesis deals with the process of field-induced electron emission from the surfaces of metals into vacuum, before and after coating by a dielectric material.
This process – induced by an intense external electrostatic field and usually called cold field electron emission (CFE) – is technically important due to its large number of applications, such as electron sources for microscopes and field emission displays.
The research described in the thesis addresses the effect of an insulating layer (epoxylite resin) on the field emission characteristics of clean tungsten tips.
Several tips, with different apex radii, have been prepared, and then examined in a standard Field Electron Microscope (FEM).
Various field electron emission characteristics have been measured under ultra-high vacuum (UHV) conditions, before and after coating by dielectric materials.
The measurements recorded include current-voltage (I–V) characteristics presented as Fowler-Nordheim (FN) plots, scanning electron micrographs and spatial current distributions (electron emission images).
In order to study the effects of the dielectric coating on field emission.
Main Subjects
No. of Pages
199
Table of Contents
Table of contents.
Abstract.
Abstract in Arabic.
Chapter One : Theoretical background.
Chapter Two : Review of literature.
Chapter Three : Design and methodology.
Chapter Four : Findings, discussions and recommendations.
References.
American Psychological Association (APA)
al-Qudah, Ala Muhammad. (2016). Characterization of composite electron source. (Master's theses Theses and Dissertations Master). Mutah University, Jordan
https://search.emarefa.net/detail/BIM-731642
Modern Language Association (MLA)
al-Qudah, Ala Muhammad. Characterization of composite electron source. (Master's theses Theses and Dissertations Master). Mutah University. (2016).
https://search.emarefa.net/detail/BIM-731642
American Medical Association (AMA)
al-Qudah, Ala Muhammad. (2016). Characterization of composite electron source. (Master's theses Theses and Dissertations Master). Mutah University, Jordan
https://search.emarefa.net/detail/BIM-731642
Language
English
Data Type
Arab Theses
Record ID
BIM-731642
