EP0795195A2 - Source de rayons x - Google Patents
Source de rayons xInfo
- Publication number
- EP0795195A2 EP0795195A2 EP96945343A EP96945343A EP0795195A2 EP 0795195 A2 EP0795195 A2 EP 0795195A2 EP 96945343 A EP96945343 A EP 96945343A EP 96945343 A EP96945343 A EP 96945343A EP 0795195 A2 EP0795195 A2 EP 0795195A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- ray
- anode
- ray source
- mixture
- metals
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J35/00—X-ray tubes
- H01J35/02—Details
- H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
- H01J35/08—Anodes; Anti cathodes
Definitions
- the invention relates to an X-ray source in the form of an X-ray tube with an anode made of metal, in particular for use in X-ray fluorescence analysis.
- the metal of the anode consists of a mixture of several metals.
- the solution according to the invention advantageously allows the provision of a plurality of X-ray lines for excitation of a plurality of excitation energies.
- the mixture of the metals can advantageously also be formed in the form of an alloy. It also applies here that the alloy has a sufficiently high melting point and good thermal conductivity and all stable metal mixtures can be used whose atomic numbers have a sufficient difference. / 13267 PC17DE96 / 01866
- the metals can advantageously be molybdenum and tungsten.
- FIG. 1 shows an X-ray signal an amount of 1 ng nickel, excited by a WL ß (10 keV) - setting of an instrument
- Fig. 2 shows the corresponding X-ray spectrum of 1 ng lead, stimulated by a Mo-Ko setting.
- FIG. 1 and 2 show X-ray spectra that have been generated with an X-ray source according to the invention.
- An alloyed Mo / W anode was equipped in the X-ray tube, the X-ray spectra being obtained in different settings.
- the X-ray signal is an amount of only 1 ng nickel, excited by a WL ß (10 keV) adjusting the stir ⁇ with the inventive anode element upgraded shown.
- 2 shows the corresponding X-ray spectrum of 1 ng lead, excited by a Mo-K setting. In both cases, a detection limit below 1 pg was achieved.
Landscapes
- X-Ray Techniques (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
L'invention concerne une source de rayons X se présentant sous la forme d'un tube à rayons X pourvu d'une anode métallique et destinée, en particulier, à être utilisée pour effectuer des analyses par fluorescence X. Le métal de l'anode est constitué d'un mélange de plusieurs métaux.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19536917 | 1995-10-04 | ||
DE19536917A DE19536917C2 (de) | 1995-10-04 | 1995-10-04 | Röntgenstrahlungsquelle |
PCT/DE1996/001866 WO1997013267A2 (fr) | 1995-10-04 | 1996-09-28 | Source de rayons x |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0795195A2 true EP0795195A2 (fr) | 1997-09-17 |
Family
ID=7773973
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96945343A Withdrawn EP0795195A2 (fr) | 1995-10-04 | 1996-09-28 | Source de rayons x |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0795195A2 (fr) |
DE (1) | DE19536917C2 (fr) |
WO (1) | WO1997013267A2 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010043028C5 (de) | 2010-10-27 | 2014-08-21 | Bruker Axs Gmbh | Verfahren zur röntgendiffraktometrischen Analyse bei unterschiedlichen Wellenlängen ohne Wechsel der Röntgenquelle |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB551897A (en) * | 1941-10-01 | 1943-03-15 | Mallory Metallurg Prod Ltd | Improvements in and relating to targets for x-ray apparatus |
DE1270192B (de) * | 1960-07-30 | 1968-06-12 | Siemens Ag | Drehanoden-Verbundteller fuer Roentgenroehren |
GB1032118A (en) * | 1962-07-09 | 1966-06-08 | Gen Electric Co Ltd | Improvements in or relating to the manufacture of high density alloys |
NL136230C (fr) * | 1963-09-02 | |||
DE2231687C3 (de) * | 1972-06-28 | 1979-04-12 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Drehanode für Röntgenröhren |
US3778654A (en) * | 1972-11-02 | 1973-12-11 | Gen Electric | Molybdenum alloy target for mammographic usage in x-ray tubes |
US4109058A (en) * | 1976-05-03 | 1978-08-22 | General Electric Company | X-ray tube anode with alloyed surface and method of making the same |
NL8101697A (nl) * | 1981-04-07 | 1982-11-01 | Philips Nv | Werkwijze voor het vervaardigen van een anode en zo verkregen anode. |
DE3524379A1 (de) * | 1984-08-08 | 1986-02-20 | Siemens AG, 1000 Berlin und 8000 München | Roentgenspektrometer |
FR2702086B1 (fr) * | 1992-10-15 | 1995-03-31 | General Electric Cgr | Anode tournante pour tube à rayonnement X composite. |
DE4402113A1 (de) * | 1994-01-26 | 1995-07-27 | Geesthacht Gkss Forschung | Verfahren und Anordnung zur Bestimmung von Elementen nach der Methode der Totalreflexions-Röntgenfluoreszenzanalyse |
-
1995
- 1995-10-04 DE DE19536917A patent/DE19536917C2/de not_active Expired - Fee Related
-
1996
- 1996-09-28 EP EP96945343A patent/EP0795195A2/fr not_active Withdrawn
- 1996-09-28 WO PCT/DE1996/001866 patent/WO1997013267A2/fr not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO9713267A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO1997013267A3 (fr) | 1997-06-05 |
DE19536917C2 (de) | 1999-07-22 |
DE19536917A1 (de) | 1997-04-10 |
WO1997013267A2 (fr) | 1997-04-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19970530 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT CH FI FR GB IT LI NL SE |
|
17Q | First examination report despatched |
Effective date: 19971023 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19990921 |