JPH04120500A - X-ray monochrome condensor - Google Patents
X-ray monochrome condensorInfo
- Publication number
- JPH04120500A JPH04120500A JP24153090A JP24153090A JPH04120500A JP H04120500 A JPH04120500 A JP H04120500A JP 24153090 A JP24153090 A JP 24153090A JP 24153090 A JP24153090 A JP 24153090A JP H04120500 A JPH04120500 A JP H04120500A
- Authority
- JP
- Japan
- Prior art keywords
- toroidal
- toroidal surface
- powder crystal
- ray
- rays
- 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.)
- Pending
Links
- 239000013078 crystal Substances 0.000 claims abstract description 21
- 239000000843 powder Substances 0.000 claims abstract description 15
- 238000002441 X-ray diffraction Methods 0.000 claims abstract description 4
- 239000007787 solid Substances 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Landscapes
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は単色Ｘ線を必要とする分析装面に用いられるＸ
線単色化装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention is directed to
This invention relates to a line monochromating device.
（従来の技術）
Ｘ線を単色化するための基本原理は結晶によるＸ線回折
の利用である。従来はこのため一般に単結晶を用いてお
り、単色Ｘ線を集光させる必要がある場合には湾曲結晶
を用いていた。また波長の長いＸ線に対しては単結晶の
代りに累積膜とか多層膜が用いられていた。(Prior Art) The basic principle for making X-rays monochromatic is the use of X-ray diffraction using crystals. Conventionally, a single crystal was generally used for this purpose, and a curved crystal was used when it was necessary to focus monochromatic X-rays. Also, for X-rays with long wavelengths, a cumulative film or a multilayer film was used instead of a single crystal.
（発明が解決しようとする課Ｂ）
上述した単結晶や多層膜は高価な上、大面積のものや任
意の曲面特に２重曲率を持った曲面を得ることが困難で
効率的に単色Ｘ線を集光させろことができなかった。(Problem B to be solved by the invention) The above-mentioned single crystals and multilayer films are expensive, and it is difficult to obtain large-area ones or arbitrary curved surfaces, especially curved surfaces with double curvature, and it is difficult to efficiently produce monochromatic X-rays. It was not possible to focus the light.
本発明は安価で効率のよいＸ線単色化集光装置を得るこ
とを目的とする。An object of the present invention is to obtain an inexpensive and efficient X-ray monochromating condensing device.
（課題を解決するための手段）
Ｘ線回折素子として粉末結晶を用い、粉末結晶集合体で
トロイダル面の内面を形成させ、このトロイダル面の回
転中心線上にｘｉｓを位置させるようにした。(Means for Solving the Problems) A powder crystal is used as an X-ray diffraction element, the inner surface of a toroidal surface is formed by a powder crystal aggregate, and xis is positioned on the rotation center line of this toroidal surface.
（作用）
トロイダル面の回転中心線を含む平面による断面（子午
的断面〉の形は円弧で、この円＠０延長が上記回転中心
線と交わる２点をＳ、Ｏとすると、トロイダル面上の任
意の一点ＰとこのＳ、０点を結ぶ２ｒＩＬ線のトロイダ
ル面上の交角φはトロイダル面上のどの点においても等
しい。そして直線ＳＰをトロイダル面への入射Ｘ線、直
線Ｐ○をトロイダル面からの回折Ｘ線とすると、θ＝１
８０°−φの半分がＸ線の回折角となる。この回折角は
目的とする単色Ｘ線の波長と粉末結晶の種類によって決
まり、逆に目的の単色Ｘ線に対して、使用する粉末結晶
を決めると、θ／′２が決まるから、θが所定の値にな
るようにトロイダル面の回転中心線を含む面内の曲率半
径および回転半径を決めると、３点から出たＸ線中、目
的の波長のＸ線が０点に集中することになる。(Function) The shape of the cross section (meridional cross section) of the plane including the rotation center line of the toroidal surface is a circular arc, and if the two points where this circle @0 extension intersects with the rotation center line are S and O, then on the toroidal surface The intersection angle φ on the toroidal surface of the 2rIL line connecting any point P and this S, 0 point is the same at any point on the toroidal surface.The straight line SP is the incident X-ray on the toroidal surface, and the straight line P○ is the toroidal surface. Assuming that the diffracted X-ray from
Half of 80°-φ becomes the diffraction angle of X-rays. This diffraction angle is determined by the wavelength of the target monochromatic X-ray and the type of powder crystal; conversely, when the powder crystal to be used is determined for the target monochromatic X-ray, θ/'2 is determined, so θ is If the radius of curvature and radius of rotation in the plane including the center line of rotation of the toroidal surface are determined so that the value of .
本発明においては粉末結晶を用いるので、トロイダル面
を作ることは容易で任意に大きな面積のものを作ること
ができ、トロイダル面の全体がＸ線源に対して張る立体
角は従来の単結晶とか多層膜を用いたものに比し著しく
大きくすることが可能となり、Ｘ線の利用効率が高めら
れる。Since a powder crystal is used in the present invention, it is easy to create a toroidal surface, and one with an arbitrarily large area can be created, and the solid angle that the entire toroidal surface makes with respect to the It can be made significantly larger than that using a multilayer film, and the efficiency of using X-rays can be increased.
（実施例）
図面は本発明の一実施例を示す。図で１が単色化集光素
子基板で、内面がトロイダル面に成型してあり、その面
に粉末結晶２が塗布しである。Ａはこのトロイダル面の
回転中心線で、ｒはその回転半径、Ｑは回転中心を含む
平面〈子午面）内におけるトロイダル面の曲率中心であ
る。回転中心線Ａ上でＳにＸ線源が配置される。Ｓはト
ロイダル面の子午面内の断面の円弧の延長と軸Ａとの交
点である。０は集光点で同じくトロイダル面の子午的断
面の延長と軸Ａとの交点である。この構成で、図で３点
から斜線を入れた範囲を３６０°回転させた立体角内に
放射されるＸ線のうち回折角θ／′２となる波長のＸ線
が０点に集中せしめられる。(Example) The drawings show an example of the present invention. In the figure, reference numeral 1 denotes a monochromatic condensing element substrate, the inner surface of which is molded into a toroidal surface, and powder crystal 2 is coated on that surface. A is the center line of rotation of this toroidal surface, r is its radius of rotation, and Q is the center of curvature of the toroidal surface in a plane (meridian plane) including the center of rotation. An X-ray source is placed at S on the rotation center line A. S is the intersection of the axis A and the extension of the circular arc of the cross section in the meridian plane of the toroidal surface. 0 is the focal point, which is also the intersection of the extension of the meridional section of the toroidal surface and the axis A. With this configuration, among the X-rays emitted within a solid angle obtained by rotating the hatched area from the three points in the figure by 360 degrees, the X-rays with the wavelength that corresponds to the diffraction angle θ/'2 are concentrated at the zero point. .
上述実施例では基板１の内面に粉末結晶を塗布している
が、基板１自体を適当な多結晶体（金属、セラミック等
）で形成してもよい。またトロイダル面は３６０′回転
面である必要はなく、目的に応じて、全回転面の一部で
あってもよい。In the above embodiment, powder crystal is applied to the inner surface of the substrate 1, but the substrate 1 itself may be formed of a suitable polycrystalline material (metal, ceramic, etc.). Further, the toroidal surface does not need to be a 360' rotation surface, and may be a part of the entire rotation surface depending on the purpose.
（発明の効果）
本発明では回折素子として粉末結晶を用いるので、単結
晶とか多層膜の場合と異り、任意に大面積のものを容易
に作ることができ、トロイダル面のような二重曲率を持
った面でも容易に作れるから、安価で集光効率の良いＸ
線単色化集光装置を提供することができる。(Effects of the Invention) Since the present invention uses a powder crystal as a diffraction element, unlike the case of a single crystal or a multilayer film, it is possible to easily produce a large area as desired, and a double curvature like a toroidal surface. Since it can be easily made even on a surface with
A line monochromatic light collector can be provided.
図面は本発明の一実施例装置の縦断面図である。
１・・・基板、２・・・粉末結晶、Ｓ・・・Ｘ線源、０
・・・集光点。
代理人 弁理士 縣 浩 介The drawing is a longitudinal sectional view of an apparatus according to an embodiment of the present invention. 1...Substrate, 2...Powder crystal, S...X-ray source, 0
...Focusing point. Agent Patent Attorney Kosuke Agata
Claims (1)
トロイダル面の内面を形成させ、このトロイダル面の子
午的断面における円弧の延長とトロイダル面の回転中心
線との交点の一方にＸ線源を配置したことを特徴とする
Ｘ線単色化集光装置。A powder crystal is used as an X-ray diffraction element, the inner surface of a toroidal surface is formed by a powder crystal aggregate, and an X-ray source is placed at one of the points of intersection between the extension of the circular arc in the meridional cross section of this toroidal surface and the rotation center line of the toroidal surface. An X-ray monochromatic condensing device characterized by having:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24153090A JPH04120500A (en) | 1990-09-11 | 1990-09-11 | X-ray monochrome condensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24153090A JPH04120500A (en) | 1990-09-11 | 1990-09-11 | X-ray monochrome condensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04120500A true JPH04120500A (en) | 1992-04-21 |
Family
ID=17075725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24153090A Pending JPH04120500A (en) | 1990-09-11 | 1990-09-11 | X-ray monochrome condensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04120500A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2709563A1 (en) * | 1993-09-02 | 1995-03-10 | Commissariat Energie Atomique | System for focusing high-energy radiation |
| US5761256A (en) * | 1997-02-07 | 1998-06-02 | Matsushita Electric Industrial Co., Ltd. | Curved pyrolytic graphite monochromator and its manufacturing method |
| JP2008032749A (en) * | 2001-06-19 | 2008-02-14 | X-Ray Optical Systems Inc | X-ray fluorescence spectroscopy system and x-ray fluorescence spectroscopy method |
-
1990
- 1990-09-11 JP JP24153090A patent/JPH04120500A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2709563A1 (en) * | 1993-09-02 | 1995-03-10 | Commissariat Energie Atomique | System for focusing high-energy radiation |
| US5761256A (en) * | 1997-02-07 | 1998-06-02 | Matsushita Electric Industrial Co., Ltd. | Curved pyrolytic graphite monochromator and its manufacturing method |
| JP2008032749A (en) * | 2001-06-19 | 2008-02-14 | X-Ray Optical Systems Inc | X-ray fluorescence spectroscopy system and x-ray fluorescence spectroscopy method |
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