Controlling charged particle beams

Details Controlling charged particle beams Controlling charged particle beams

1987-01-20

1989-05-09

Fields, Carolyn E.

X-ray or gamma ray systems or devices

Specific application

Absorption

2504923, 21912113, B23K 900

Patent

active

048295507

ABSTRACT:
A method and apparatus for causing a beam of charged particles (4) to impinge on a surface of a workpiece (1,1A) along an impingement path (2) such as a weld joint line is described. The apparatus comprises an electron beam source (3); a first control assembly (24) for guiding the beam along the joint line (2) and for deflecting the beam at successive positions onto the joint line; and a second control assembly (22) into which the beam (4) is launched for deflecting the beam at selected positions into the first control assembly. In an embodiment, X-rays are generated and detected to monitor the condition of the weld.

REFERENCES:
patent: 3687716 (1972-08-01), Steigerwald
patent: 3974381 (1976-05-01), Rohrle et al.

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