Apparatus for irradiating a target on two opposite faces by means of an accelerated charged particle beam
US4201920A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 1978 |
| Grant date | May 6, 1980 |
| Priority date | — |
| Expiry date | Jun 27, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG21K1/093
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Apparatus for irradiating the two opposite faces of a target by means of a scanning beam and comprising a magnetic deflection system formed by an electromagnet provided with two pole pieces disposed downstream of the target to be irradiated, the length of the pole pieces corresponding to the amplitude of the scanning beam in such a way that, if .theta.=.theta..sub.1 +.theta..sub.2 is the total scanning angle, the scanning beam of angle .theta..sub.1 impinges on one face of the target, while the scanning beam of angle .theta..sub.2 =.theta.-.theta..sub.1 is deflected in the magnetic deflection system and irradiates the other face, the polepieces having a face, so-called useful face, facing the other face of the target and comprising several sections with different curvatures for obtaining a reflected beam substantially perpendicular to this other face of the target.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.