EP1323170B1 - Röntgenoptische anordnung - Google Patents
Röntgenoptische anordnung Download PDFInfo
- Publication number
- EP1323170B1 EP1323170B1 EP01943167A EP01943167A EP1323170B1 EP 1323170 B1 EP1323170 B1 EP 1323170B1 EP 01943167 A EP01943167 A EP 01943167A EP 01943167 A EP01943167 A EP 01943167A EP 1323170 B1 EP1323170 B1 EP 1323170B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ray
- radiation
- optical arrangement
- arrangement according
- ray optical
- 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.)
- Expired - Lifetime
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Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—HANDLING OF PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
- G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
- G21K1/06—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diffraction, refraction or reflection, e.g. monochromators
Definitions
- the invention relates to an X-ray optical arrangement according to the preamble of claim 1. It can be special advantageous in X-ray analysis, e.g. in the X-ray diffractometry, reflectometry and / or the fluorescence analysis can be used.
- X-ray analytics are for the most diverse Applications X-rays with high intensity, i.e. especially high photon density required. This can be done by focusing the x-rays be achieved. In many cases, however, it is cheaper X-radiation with very small divergence, in the best case, use as parallel X-rays to be able to.
- the X-rays In X-ray analysis, it is also desired a high surface sensitivity of the X-radiation on surfaces to be analyzed or in fluidic Samples present on substrate slides are to reach.
- the X-rays preferably grazing, i. with relative small angles of incidence up to a few degrees of incidence angles or a few tenths of a degree angle of incidence, i.e. near the critical angle of total reflection, on a sample or a corresponding substrate surface directed and consequently the radiation cross section according to 1 / sin ⁇ projected onto the sample surface becomes. It is desired the photon density ever Increase the area on the projection surface or to focus on a smaller projection screen.
- the surface intensity and consequently also the photon density can be known by strong bundling parallel or nearly parallel X-rays are increased and consequently also the each locally detectable measurement signal of a sample increases become.
- the spatial resolution of Measuring signals i. the most accurate assignment possible Measuring signals to the measuring location make high demands the test setup.
- the X-ray optical arrangement according to the invention uses usual X-ray optical elements, like a suitable X-ray source, X-rays focusing and an X-ray reflecting Element.
- the X-ray radiation of the X-ray source on the focusing element directed, which is a lens effect reaching element, but cheaper to a corresponding shaped reflector can act.
- the of X-ray focused on this element is on directed an X-ray reflecting element, whose reflective surfaces are convex and is formed parabolic.
- the reflective element Due to this surface shape of the reflective element can simultaneously bundling (compression) X-radiation and its parallel alignment be obtained with negligible divergence, the on a suitably arranged and aligned Surface of a sample or a substrate directed can be.
- the convergent X-ray radiation with punctiform, elliptical or line-shaped cross section are, of course, the surface contour of the X-ray reflecting Element is adapted to this geometry.
- linear Beam cross sections can be focused and the reflective element have cylinder symmetry.
- At least the surface of the reflective element can be a single reflective layer, in In many cases, however, cheaper, a multilayer system exhibit.
- the X-ray radiation from the focusing element can be directed onto the reflective element at an angle ⁇ the critical angle ⁇ c of the total reflection and the desired effect can be achieved.
- the individual layers of the multilayer system taking into account the different angles of incidence of the x-rays, have a correspondingly adapted thickness distribution with which the respective angles of incidence ⁇ i and Bragg's for a predeterminable x-ray wavelength Satisfy equation on each surface element of the reflective element.
- the gradient layers have a double-layer thickness that changes over the length.
- the adjacent ones Single layers of a multilayer system point different X-ray optical refractive indices on.
- the largest possible compression of the X-ray radiation can be obtained when focusing points F of focusing and reflective element with each other match, but at least in the immediate Are arranged close to each other.
- the focusing element forms the X-ray source in a line focus, it is also advantageous the parabolic shape of the reflective element cylindrically symmetric to choose a linear To receive parallel radiation.
- the signal-to-noise ratio be improved because with the reflective Element an additional monochromator is arranged in the beam path.
- the dynamic Range of measurement can be increased, which is e.g. the information content of a measured reflectogram rises, possibly due to background signals covered diffraction orders are detected can.
- the invention is based on an exemplary embodiment be explained.
- Figure 1 becomes divergent X-radiation of an X-ray source 1 on a concave, elliptical or parabolic shape Surface, with for the X-ray radiation used reflective surface, in this case a Multilayer system, directed.
- the x-ray radiation is reflected from there and at the same time on the convex, parabolic reflective surface of the directed to the reflective element, the from the reflective element 3 reflected x-ray radiation simultaneously compressed and aligned in parallel becomes.
- the bundled parallel X-radiation can then for the different X-ray analysis techniques be used, wherein X-ray cross-sections in the range of less than 200 microns easily accessible are.
- the reflective surface of the reflective Element 3 can also be a multilayer system, in which the layer thicknesses of the individual layers locally, according to the different angles of incidence the incident X-ray considered are, be present.
- the parallel, reflected x-rays not only have a higher intensity, but they will also monochromatized.
- the focused X-radiation predetermines different angles of incidence ⁇ i on the reflecting surface of the reflecting element 3, it is accordingly also necessary to use a corresponding gradient multilayer system which has a different period thickness d i at the corresponding X-ray wavelength corresponding to the respective angles of incidence.
- the reflective Surface of the focusing element 2 a parabolic shape ( Figure 2), but it can also an elliptical contour ( Figure 1) are used.
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Description
- Figur 1:
- schematisch ein Beispiel einer röntgenoptischen Anordnung nach der Erfindung bei der divergente Röntgenstrahlung einer Röntgenstrahlungsquelle auf ein fokussierendes Element gerichtet und in Parallelstrahlung mit kleinerem Strahlquerschnitt umgewandelt wird und
- Figur 2:
- in schematischer Form ein Beispiel einer Anordnung, bei der parallele Röntgenstrahlung auf ein fokussierendes Element gerichtet und in Parallelstrahlung mit deutlich kleinerem Strahlquerschnitt umgewandelt wird.
bzw.
Claims (10)
- Röntgenoptische Anordnung mit einer Röntgenstrahlquelle, einem Röntgenstrahlen fokussierenden und einem Röntgenstrahlen reflektierenden Element, zur Erzeugung einer parallelen Röntgenstrahlung mit kleinem Strahlquerschnitt, hoher Photonendichte,
dadurch gekennzeichnet, dass die Röntgenstrahlung der Röntgenstrahlquelle (1) mit dem fokussierenden Element (2) auf die konvexe, parabelförmige und reflektierende Oberfläche des reflektierenden Elementes (3) gerichtet ist. - Röntgenoptische Anordnung nach Anspruch 1, dadurch gekennzeichnet, dass auf der Oberfläche des reflektierenden Elementes (3) eine reflektierende Schicht oder ein Multischichtsystem vorhanden ist.
- Röntgenoptische Anordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die einzelnen Schichten des Multischichtsystems Gradientenschichten sind.
- Röntgenoptische Anordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Röntgenstrahlung mit einem Winkel s dem Grenzwinkel c der Totalreflexion auf das reflektierende Element (3) gerichtet ist.
- Röntgenoptische Anordnung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Röntgenstrahlung mit Einfallswinkeln i auf das Multischichtsystem mit Gradientenschichten gerichtet ist, so dass bei einer vorgebbaren Röntgenstrahlungswellenlänge die Braggsche Gleichung auf jedem Flächenelement des reflektierenden Elementes (3) erfüllt ist.
- Röntgenoptische Anordnung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Fokuspunkte F des fokussierenden Elementes (2) und des reflektierenden Elementes (3) übereinstimmen.
- Röntgenoptische Anordnung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das fokussierende Element (2) eine konkave, parabelförmige oder elliptische Oberfläche aufweist.
- Röntgenoptische Anordnung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Parabelform des reflektierenden Elementes (3) zylindersymmetrisch ist.
- Röntgenoptische Anordnung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass jeweils benachbarte Einzelschichten des Multischichtsystems unterschiedliche röntgenoptische Brechungsindizes aufweisen.
- Verwendung einer röntgenoptischen Anordnung nach einem der Ansprüche 1 bis 9 bei der Röntgendiffraktometrie, der Reflektometrie und/oder der Röntgenfluoreszenzanalyse.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10028970 | 2000-06-05 | ||
| DE10028970A DE10028970C1 (de) | 2000-06-05 | 2000-06-05 | Röntgenoptische Anordnung zur Erzeugung einer parallelen Röntgenstrahlung |
| PCT/DE2001/002043 WO2001094987A2 (de) | 2000-06-05 | 2001-05-18 | Röntgenoptische anordnung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1323170A2 EP1323170A2 (de) | 2003-07-02 |
| EP1323170B1 true EP1323170B1 (de) | 2005-08-03 |
Family
ID=7645490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01943167A Expired - Lifetime EP1323170B1 (de) | 2000-06-05 | 2001-05-18 | Röntgenoptische anordnung |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6724858B2 (de) |
| EP (1) | EP1323170B1 (de) |
| JP (1) | JP2003536081A (de) |
| AT (1) | ATE301328T1 (de) |
| DE (2) | DE10028970C1 (de) |
| WO (1) | WO2001094987A2 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7403593B1 (en) * | 2004-09-28 | 2008-07-22 | Bruker Axs, Inc. | Hybrid x-ray mirrors |
| US7991116B2 (en) * | 2005-08-04 | 2011-08-02 | X-Ray Optical Systems, Inc. | Monochromatic x-ray micro beam for trace element mapping |
| WO2021142463A1 (en) * | 2020-01-10 | 2021-07-15 | Ipg Photonics Corporation | X-ray apparatus |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4684565A (en) * | 1984-11-20 | 1987-08-04 | Exxon Research And Engineering Company | X-ray mirrors made from multi-layered material |
| FR2630832B1 (fr) * | 1988-04-29 | 1995-06-02 | Thomson Csf | Systeme de miroirs pour le guidage d'une onde electromagnetique |
| JP3060624B2 (ja) * | 1991-08-09 | 2000-07-10 | 株式会社ニコン | 多層膜反射鏡 |
| JPH0720293A (ja) * | 1993-06-30 | 1995-01-24 | Canon Inc | X線ミラー及びこれを用いたx線露光装置とデバイス製造方法 |
| BE1007607A3 (nl) * | 1993-10-08 | 1995-08-22 | Philips Electronics Nv | Multilaagspiegel met verlopende brekingsindex. |
| US5646976A (en) * | 1994-08-01 | 1997-07-08 | Osmic, Inc. | Optical element of multilayered thin film for X-rays and neutrons |
| JPH08146199A (ja) * | 1994-11-18 | 1996-06-07 | Nikon Corp | 平行x線照射装置 |
| DE4443853A1 (de) * | 1994-12-09 | 1996-06-13 | Geesthacht Gkss Forschung | Vorrichtung mit einer Röntgenstrahlungsquelle |
| US5911858A (en) * | 1997-02-18 | 1999-06-15 | Sandia Corporation | Method for high-precision multi-layered thin film deposition for deep and extreme ultraviolet mirrors |
| US6049588A (en) * | 1997-07-10 | 2000-04-11 | Focused X-Rays | X-ray collimator for lithography |
| JPH1138192A (ja) * | 1997-07-17 | 1999-02-12 | Nikon Corp | 多層膜反射鏡 |
| US6041099A (en) * | 1998-02-19 | 2000-03-21 | Osmic, Inc. | Single corner kirkpatrick-baez beam conditioning optic assembly |
| US6295164B1 (en) * | 1998-09-08 | 2001-09-25 | Nikon Corporation | Multi-layered mirror |
-
2000
- 2000-06-05 DE DE10028970A patent/DE10028970C1/de not_active Expired - Fee Related
-
2001
- 2001-05-18 EP EP01943167A patent/EP1323170B1/de not_active Expired - Lifetime
- 2001-05-18 WO PCT/DE2001/002043 patent/WO2001094987A2/de not_active Ceased
- 2001-05-18 JP JP2002502480A patent/JP2003536081A/ja active Pending
- 2001-05-18 US US10/048,873 patent/US6724858B2/en not_active Expired - Lifetime
- 2001-05-18 AT AT01943167T patent/ATE301328T1/de not_active IP Right Cessation
- 2001-05-18 DE DE50106990T patent/DE50106990D1/de not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE50106990D1 (de) | 2005-09-08 |
| WO2001094987A2 (de) | 2001-12-13 |
| ATE301328T1 (de) | 2005-08-15 |
| WO2001094987A3 (de) | 2003-04-03 |
| JP2003536081A (ja) | 2003-12-02 |
| US6724858B2 (en) | 2004-04-20 |
| DE10028970C1 (de) | 2002-01-24 |
| EP1323170A2 (de) | 2003-07-02 |
| US20020159562A1 (en) | 2002-10-31 |
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