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X-ray source and method for producing x-rays

A Roentgen ray and Roentgen radiation technology, applied in the field of Roentgen ray sources, can solve problems such as high wear and low mechanical strength

Inactive Publication Date: 2016-03-02
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

A disadvantage of the solution disclosed here is the high heat release in the anode layer and in the anode carrier
In such roentgen ray sources, the heat release in the anode is generally limiting for the power density of the electron beam and thus also for the beam power emitted by the roentgen ray source
Another disadvantage is the low mechanical strength of the thin anodic layer and the associated high wear

Method used

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  • X-ray source and method for producing x-rays
  • X-ray source and method for producing x-rays

Examples

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Embodiment Construction

[0036] exist figure 1 A schematic cross-section of a roentgen ray source 1 according to a first embodiment of the invention is shown in . An evacuatable outer housing 3 is shown, which has a circular cross section. The outer housing 3 can be designed, for example, as a hollow sphere or as a hollow cylinder. The creation of a vacuum in the housing 3 is a prerequisite for the emission of electrons into this space and the acceleration of the electrons in the direction of the predetermined position. The outer housing 3 is provided with a beam exit window 5 for coupling out the generated Roentgen radiation 9 from the Roentgen source 1 . The beam exit window 5 is also sealed vacuum-tight with respect to the outer housing 3 . Suitable materials for beam exit window 5 are, for example, beryllium or aluminum.

[0037] Arranged in the evacuatable space are an electron source 7 , a vapor vessel 25 with an inlet opening 26 and an outlet opening 27 , and a collector 21 . The electron ...

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Abstract

The invention relates to an X-ray source (1) having an outer housing (3) that can be evacuated, comprising at least one radiation exit window (5), an electron source (7) for emitting an electron beam and an anode (13) for producing X-rays. When the X-ray source is in operation, the anode is present in a vapor phase, wherein the vaporous anode can be produced by evaporating a stock (15) of anode material that is present in a condensed phase by exposure to the electron beam. The invention further relates to a method, in which inside of an outer housing of an X-ray, which can be evacuated, a vaporous anode is continuously formed by bombarding the anode material that is present in a condensed phase with an electron beam. The vaporous anode emits X-rays by interaction with the electron beam. The advantages of the method according to the invention for producing X-rays result analogously to the advantages of the X-ray source according to the invention.

Description

technical field [0001] The invention relates to a roentgen ray source, which has: an evacuatable outer casing with at least one beam exit window through which a roentgen ray beam can penetrate; Electron source and anode for generating Roentgen radiation. Furthermore, the invention relates to a method for generating Roentgen radiation, in which the anode emits Roentgen radiation by interaction with an electron beam. Background technique [0002] In known roentgen ray sources, electrons are accelerated in an evacuatable outer casing, a so-called roentgen ray tube, towards an anode whose material is suitable for converting the energy of the accelerated electrons into roentgen radiation . Roentgen radiation is coupled out from the Roentgen source through an exit window that is transparent to the Roentgen beam. In the case of an application in an imaging system, the radiation is then generally directed towards the object to be examined and then measured by means of an imaging ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05G2/00H01J35/08
CPCH05G2/001H05G2/005H01J2235/082H05G2/008H01J35/116
Inventor O.海德
Owner SIEMENS AG
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