Negative ion source with low temperature transverse divergence optical system

Patent · Wed Jan 01 00:00:00 EST 1986

OSTI ID:865935

Whealton, John H ^[1]; Stirling, William L ^[1]

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1. Oak Ridge, TN

A negative ion source is provided which has extremely low transverse divergence as a result of a unique ion focusing system in which the focal line of an ion beam emanating from an elongated, concave converter surface is outside of the ion exit slit of the source and the path of the exiting ions. The beam source operates with a minimum ion temperature which makes possible a sharply focused (extremely low transverse divergence) ribbon like negative ion beam.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: W-7405-ENG-26
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4602161
• OSTI ID: 865935
• Country of Publication: United States
• Language: English

Related Subjects

negative
source
temperature
transverse
divergence
optical
provided
extremely
result
unique
focusing
focal
line
beam
emanating
elongated
concave
converter
surface
outside
exit
slit
path
exiting
operates
minimum
makes
sharply
focused
ribbon
beam source
transverse divergence
beam emanating
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