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Magnesium ion source for high intensity mass spectrograph


Pi, Te Hsien (1944) Magnesium ion source for high intensity mass spectrograph. Dissertation (Ph.D.), California Institute of Technology.


Magnesium ions were produced by bombarding magnesium vapor by electrons emitted tram oxide coated cathodes. The ions were then focussed into a thin sheet by means of an electrostatic lens. This ion sheet was sent into the magnetic lens which focussed the sheet into a small spot where they were collected. The ion current obtained at the collector was 120 microamperes.

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):
  • Smythe, William Ralph
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1944
Record Number:CaltechTHESIS:12052012-154742447
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:7304
Deposited By: Benjamin Perez
Deposited On:06 Dec 2012 17:22
Last Modified:01 Dec 2016 00:32

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