Naval Postgraduate School
Dudley Knox Library
NPS Dudley Knox Library
View Item 
  •   Calhoun Home
  • Theses and Dissertations
  • 1. Thesis and Dissertation Collection, all items
  • View Item
  •   Calhoun Home
  • Theses and Dissertations
  • 1. Thesis and Dissertation Collection, all items
  • View Item
  • How to search in Calhoun
  • My Accounts
  • Ask a Librarian
JavaScript is disabled for your browser. Some features of this site may not work without it.

Browse

All of CalhounCollectionsThis Collection

My Account

LoginRegister

Statistics

Most Popular ItemsStatistics by CountryMost Popular Authors

Proposed model of thermionically assisted breakdown and implementation on electrostatic thrusters

Thumbnail
Download
Iconproposedmodeloft00bell.pdf (3.628Mb)
Download Record
Download to EndNote/RefMan (RIS)
Download to BibTex
Author
Bell, Walter J.
Date
1991-12
Advisor
Biblarz, Oscar
Second Reader
Olsen, R. C.
Metadata
Show full item record
Abstract
A model for thermionically assisted breakdown is proposed which predicts the voltage reduction experienced in low voltage discharges. This reduction in breakdown voltage has been beneficial to numerous engineering applications of arcs and is explored herein specifically for electrostatic thrusters. Full advantage in employing thermionically assisted breakdown is attained by establishing a continuum of electron emission across the primary discharge gap. These electrons must be independent of the discharge itself, being established prior to ignition. The electron emission is therefore achieved by auxiliary emitters across the gap. Electrons amass in a space charge in the vicinity of the assisting device. The particular processes which induce charge multiplication are proposed to be multistep ionization and neutralization of the space charge by ions. Breakdown criteria and a means of estimating the reduction is breakdown voltage requirement are derived. One proposal for the thermionically assisting emission device is the coiled-coil filament, and a scheme for installing such filaments in ionization chambers for electrostatic thrusters is described. Thermionically assisted breakdown implementation should also pertain to arc applications for various primary electrode geometries as well as certain gases.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
URI
http://hdl.handle.net/10945/28474
Collections
  • 1. Thesis and Dissertation Collection, all items

Related items

Showing items related by title, author, creator and subject.

  • Thumbnail

    X-ray pulse considerations and electron flow in high voltage vacuum diodes 

    Callahan, Michael O. (Monterey, California. Naval Postgraduate School, 1993-12);
    Electrical breakdown in high voltage diodes has been studied since the 1920s, yet it is still not well understood. This study characterizes the electron flow during breakdown in a high voltage vacuum diode. This was ...
  • Thumbnail

    A study of the breakdown mechanism of AISI 304 stainless steel, type 2024 aluminum and various titanium coatings 

    Beelby, Michael Howard; Ulrich, Henry George, III (Monterey, California. Naval Postgraduate School, 1981-12);
    An investigation, experimental and theoretical, into the breakdown mechanisms and associated minimum power levels required for the breakdown and unipolar arcing was conducted for AISI 304 stainless steel and Type 2024 ...
  • Thumbnail

    Beyond Armageddon: deterrence with less 

    Kolbas, Patrick Joseph (Monterey, California. Naval Postgraduate School, 1991-06);
    This thesis examines the implications for nuclear deterrence between the United States and the Soviet Union brought about by the dramatic changes in the strategic environment during the 1980s. Specifically, it examines the ...
NPS Dudley Knox LibraryDUDLEY KNOX LIBRARY
Feedback

411 Dyer Rd. Bldg. 339
Monterey, CA 93943
circdesk@nps.edu
(831) 656-2947
DSN 756-2947

    Federal Depository Library      


Start Your Research

Research Guides
Academic Writing
Ask a Librarian
Copyright at NPS
Graduate Writing Center
How to Cite
Library Liaisons
Research Tools
Thesis Processing Office

Find & Download

Databases List
Articles, Books & More
NPS Theses
NPS Faculty Publications: Calhoun
Journal Titles
Course Reserves

Use the Library

My Accounts
Request Article or Book
Borrow, Renew, Return
Tech Help
Remote Access
Workshops & Tours

For Faculty & Researchers
For International Students
For Alumni

Print, Copy, Scan, Fax
Rooms & Study Spaces
Floor Map
Computers & Software
Adapters, Lockers & More

Collections

NPS Archive: Calhoun
Restricted Resources
Special Collections & Archives
Federal Depository
Homeland Security Digital Library

About

Hours
Library Staff
About Us
Special Exhibits
Policies
Our Affiliates
Visit Us

NPS-Licensed Resources—Terms & Conditions
Copyright Notice

Naval Postgraduate School

Naval Postgraduate School
1 University Circle, Monterey, CA 93943
Driving Directions | Campus Map

This is an official U.S. Navy Website |  Please read our Privacy Policy Notice  |  FOIA |  Section 508 |  No FEAR Act |  Whistleblower Protection |  Copyright and Accessibility |  Contact Webmaster

Export search results

The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

A logged-in user can export up to 15000 items. If you're not logged in, you can export no more than 500 items.

To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.