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Negative ion source with low temperature transverse divergence optical system

Patent ·
OSTI ID:865935
 [1];  [1]
  1. Oak Ridge, TN
+ Show Author Affiliations
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
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

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/250/313/315/376/
beam
beam emanating
beam source
concave
converter
divergence
elongated
emanating
exit
exiting
extremely
focal
focused
focusing
line
makes
minimum
negative
operates
optical
outside
path
provided
result
ribbon
sharply
slit
source
surface
temperature
transverse
transverse divergence
unique