Cart (Loading....) | Create Account
Close category search window

La-Mo film cathode preparation and analysis in situ

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)
Shiming Hao ; Sch. of Mater. Sci. & Eng., Beijing Univ. of Technol., China ; Nie, Z. ; Yang, J. ; Yiman Wang
more authors

Summary form only given. Lanthanum-containing cathodes are an attractive alternative to thorium tungsten cathodes because of their low work function and their comparatively low operating temperatures. The function of La element in La-Mo cathode material was studied by using a set of equipment specially designed to cathode research. A La-Mo film cathode was prepared with pulsed laser deposition (PLD) in diverse vacuum condition. For the first time, the electron emission properties have been measured without exposing to the atmosphere. By means of Auger electron spectroscopy, we investigated the surface composition of the cathode in situ. We find out obviously that the cathode emission properties have relation to the surface La/O ratio. As the La/O ratios get higher, the emission properties show better. The excess La element is contributed to thermionic emission. On the basis of experiment result, the emission mechanism of La-Mo cathode has been discussed.

Published in:

Vacuum Electron Sources Conference, 2004. Proceedings. IVESC 2004. The 5th International

Date of Conference:

6-10 Sept. 2004

Need Help?

IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.