Electron optical apparatus, X-ray emitting device and method...

Details Electron optical apparatus, X-ray emitting device and method... Electron optical apparatus, X-ray emitting device and method...

2007-10-08

2010-11-23

Kiknadze, Irakli (Department: 2882)

X-ray or gamma ray systems or devices

Source

Electron tube

C378S138000

Reexamination Certificate

active

07839979

ABSTRACT:
It is described an electron optical arrangement, a X-ray emitting device and a method of creating an electron beam. An electron optical apparatus (1) comprises the following components along an optical axis (25): a cathode with an emitter (3) having a substantially planar surface (9) for emitting electrons; an anode (11) for accelerating the emitted electrons in a direction essentially along the optical axis (25); a first magnetic quadrupole lens (19) for deflecting the accelerated electrons and having a first yoke (41); a second magnetic quadrupole lens (21) for further deflecting the accelerated electrons and having a second yoke (51); and a magnetic dipole lens (23) for further deflecting the accelerated electrons.

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