Apparatus and method for aiming a particle beam

Details Apparatus and method for aiming a particle beam Apparatus and method for aiming a particle beam

1986-02-13

1987-10-20

Church, Craig E.

Radiant energy

Electrically neutral molecular or atomic beam devices and...

250397, 2504911, H05H 300

Patent

active

047016167

ABSTRACT:
In aiming a neutral particle beam cross hair sights are first lined up relative to a target, and then the beam is lined up with the cross hair sights. Blocking means is disposed in a particle beam so as to absorb, scatter and/or otherwise remove particles from the beam and thereby create a downstream shadow of predetermined size and shape in the beam. Shadow detecting means is disposed in the beam downstream of the blocking means and senses the particles and emits steering signals systematically related to the extent to which the shadow detecting means is in the shadow of the blocking means. Aligning means lines up the blocking means and the shadow means in a desired direction relative to the target. The steering signals are thus systematically related to the direction of the beam relative to the desired direction. The steering signal from the sensing means is used to direct the neutral particle beam to hit the target.

REFERENCES:
patent: 3842279 (1974-10-01), Schumacher
patent: 4260893 (1981-04-01), Bakker et al.

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