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A Regulated High Voltage Supply for the Electron Microscope


Langmuir, Robert Vose (1943) A Regulated High Voltage Supply for the Electron Microscope. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/95T7-M255.


NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. 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.))
Subject Keywords:(Physics)
Degree Grantor:California Institute of Technology
Division:Physics, Mathematics and Astronomy
Major Option:Physics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Houston, William Vermillion
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1943
Record Number:CaltechETD:etd-05132003-122821
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:1761
Deposited By: Imported from ETD-db
Deposited On:13 May 2003
Last Modified:10 Nov 2023 17:35

Thesis Files

PDF (Langmuir_rv_1943.pdf) - Final Version
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