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U.S. Department of Energy
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APPARATUS FOR THE MASS ANALYSIS OF PLASMA ON A CONTINUOUS BASIS

Patent ·
OSTI ID:4668506
An apparatus for the mass analysis of plasmas on a continuous basis is described. The apparatus comprises a pair of parallel electrodes in a tubular member which serve as a velocity-selecting region for ions drawn by an accelerating potential through a tapered nose cone affixed to the tubular member. The magnetic force and electrostatic forces in the velocity-selecting region are made equal and opposite in direction to prevent the ionic species from striking either of the electrodes as they traverse the region. A pair of parallel plates is positioned within the tubular member and in alignment with the electrodes, but displaced slightly so as not to be seen by direct light coming through the entrance slit of the nose cone, and one of these plates serves as a collector plate. This collector plate is coupled to the vertical amplifier of an oscilloscope or other recorder to provide a continuous indication of the ionic coinposition of the plasma under analysis. ( DELTA EC)
Research Organization:
Originating Research Org. not identified
NSA Number:
NSA-17-031631
Assignee:
U.S. Atomic Energy Commission
Patent Number(s):
US 3096438
OSTI ID:
4668506
Country of Publication:
United States
Language:
English

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