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A regulated high voltage supply for the electron microscope

Citation

Langmuir, Robert V. (1943) A regulated high voltage supply for the electron microscope. Dissertation (Ph.D.), California Institute of Technology. http://resolver.caltech.edu/CaltechETD:etd-05132003-122821

Abstract

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The errors of magnetic electron lenses are discussed, particularly with respect to the ultimate resolving power of the electron microscope. A regulated high voltage power supply using frequency modulated carrier system has been constructed which contributes considerably to the operation of the electron microscope at high magnifications. The errors of the magnetic lenses due to poor lining up and centering have been reduced considerably by operation at lower magnifications. A resolving power of about 150 [Angstroms] has been obtained. Some pictures of clays, calcite and rouge are presented.

Item Type:Thesis (Dissertation (Ph.D.))
Degree Grantor:California Institute of Technology
Division:Physics, Mathematics and Astronomy
Major Option:Physics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Unknown, Unknown
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1943
Record Number:CaltechETD:etd-05132003-122821
Persistent URL:http://resolver.caltech.edu/CaltechETD:etd-05132003-122821
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:1761
Collection:CaltechTHESIS
Deposited By: Imported from ETD-db
Deposited On:13 May 2003
Last Modified:26 Dec 2012 02:41

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