Plasma X-ray tube, in particular for X-ray preionizing of gas la

Details Plasma X-ray tube, in particular for X-ray preionizing of gas la Plasma X-ray tube, in particular for X-ray preionizing of gas la

1990-10-09

1992-07-28

Westin, Edward P.

X-ray or gamma ray systems or devices

Source

Electron tube

31511121, 31323131, H01J 724

Patent

active

051346419

ABSTRACT:
A plasma X-ray tube, which can be referred to as a one-chamber ionizing tube for pre-ionizing TE lasers, in particular excimer lasers, includes an extended, box-like housing with a U-shaped hollow cathode which is disposed in the interior of the housing and is also elongated. The open side of the hollow electrode faces an X-ray target which is in the form of a gas-tight foil. Between the X-ray target and the hollow cathode is a long wire-shaped igniting electrode. When a positive voltage or a voltage pulse is applied to the igniting electrode, an electrical field is formed around it. Electrons that are present are forced onto a long, spiral path and gas atoms are ionized under the influence of the electrical field and because of ambient radiation. Electron avalanches form and lead to initiation of a wire discharge. When the accelerator voltage, which is typically at most between 60 kV and 120 kV, is applied to the hollow cathode low-pressure plasma, ions are extracted and accelerated against the hollow cathode. When the ions impact, secondary electrons are emitted from the hollow cathode and are accelerated in the opposite direction, so that an electron beam forms and strikes the X-ray target to generate X-ray retarding radiation. The plasma X-ray tube is fundamentally suitable as an electron gun, with a suitable electron-beam permeable configuration of a foil that covers the window opening in the target retaining wall and serves as an electron window.

REFERENCES:
patent: 4728862 (1988-03-01), Kovarlik et al.
patent: 4955045 (1990-09-01), Friede et al.
patent: 5007373 (1991-04-01), Legg et al.

Affiliated with

Also associated with

Rating

Plasma X-ray tube, in particular for X-ray preionizing of gas la does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Plasma X-ray tube, in particular for X-ray preionizing of gas la, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Plasma X-ray tube, in particular for X-ray preionizing of gas la will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1692086