Electron beam collimator

Details Electron beam collimator Electron beam collimator

G - Physics

21

K

358/28

G21K 1/02 (2006.01) H01J 21/14 (2006.01)

Patent

CA 1070440

ABSTRACT: An electron beam collimator comprising an open-ended tube structure of prismatic shape having at least one pair of parallel sides in each of which at least one intermediate wall portion is interposed in overlapping and sliding relationship with the adjacent wall portions so that the cross- section of the tube structure, and hence of the beam emerging therefrom, can be varied.

265301

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