JPS58117476A - Radiation detector - Google Patents
Radiation detectorInfo
- Publication number
- JPS58117476A JPS58117476A JP7082A JP7082A JPS58117476A JP S58117476 A JPS58117476 A JP S58117476A JP 7082 A JP7082 A JP 7082A JP 7082 A JP7082 A JP 7082A JP S58117476 A JPS58117476 A JP S58117476A
- Authority
- JP
- Japan
- Prior art keywords
- light
- radiation
- intensity distribution
- luminous
- irradiated
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/02—Dosimeters
- G01T1/10—Luminescent dosimeters
- G01T1/11—Thermo-luminescent dosimeters
- G01T1/115—Read-out devices
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Measurement Of Radiation (AREA)
- Radiography Using Non-Light Waves (AREA)
Abstract
Description
【発明の詳細な説明】 （発明の属する技術分野） この発明は発光物質を利用した放射線検出器に関する。[Detailed description of the invention] (Technical field to which the invention pertains) The present invention relates to a radiation detector using a luminescent substance.
（従来技術およびその問題・豐求）
この発明に関係が深い従来技術例を第１図に示す。図中
、ｌは発光物質（放射線熱螢光物質（ＬｉＦ：Ｍｇなど
）あるいは、λ１＝３６５ｎｍの索外纏励起によって橙
色（λ、＝＝５００〜７ＱＱｎｔｎ ）の螢光を発する
リン酸塩ガラス）、２は光検出器、３は増幅器、４は電
源、５は熱源あるいは光源、６は線量表示器をそれぞれ
示す。動作原理は１発光物質に照射する放射線量に比例
し丸見光量が得られることを利用しており１発光物質は
図に示されるような測定系に入れたままで使用するかも
しくは単蝕に放射線を照射した後に測定系へ入れられる
。しかるに問題点としては次の点があげられる。(Prior art and its problems/requests) An example of a prior art that is closely related to this invention is shown in FIG. In the figure, l is a luminescent material (a radiation thermal fluorescent material (LiF:Mg, etc.) or a phosphate glass that emits orange (λ, = 500 to 7QQntn) fluorescence upon excitation of the outer layer at λ1 = 365 nm). , 2 is a photodetector, 3 is an amplifier, 4 is a power source, 5 is a heat source or light source, and 6 is a dose indicator. The operating principle is based on the fact that the amount of radiation irradiated to a single luminescent substance is proportional to the amount of radiation irradiated, and a complete luminous amount can be obtained.The luminescent substance can be used while it is in the measurement system as shown in the figure, or it can be used with a single eclipse of radiation. After being irradiated, it is placed into the measurement system. However, the following problems can be raised.
（１）放射線の空間的強度分布を計測することができな
い。(1) It is not possible to measure the spatial intensity distribution of radiation.
（２）発光物質から生ずる光を効率よく光検出器へ入射
させることが困難である。(2) It is difficult to efficiently make light emitted from a luminescent substance enter a photodetector.
（発明の目的）
この発明の目的は、放射線の空間的強度分布を計測する
ことができて、しかも光の利用効率が萬い放射線検出器
を提供するにある。(Object of the Invention) An object of the present invention is to provide a radiation detector that can measure the spatial intensity distribution of radiation and has high light utilization efficiency.
（発明の概４Ｉ）
放射線照射後に加熱あるいは光照射することによって発
光する物質を、その屈折率と異なる屈折率を有する一層
以上の物質で被覆して光導波路を構成することによシ、
放射線の空間的強度分布を１測することができ、しかも
光の利用効率の高い放射線検出器を得ることができる。(Summary of the Invention 4I) By constructing an optical waveguide by coating a material that emits light by heating or irradiating it with light after irradiation with radiation with one or more layers of material having a refractive index different from that of the material,
It is possible to obtain a radiation detector that can measure the spatial intensity distribution of radiation and has high light utilization efficiency.
（発明の実施例）
本発明の実施例を第２図に示す０図中、７は発光物質（
放射線熱螢光物質あるいはリン酸塩ガラス）、８は被覆
物質（光のとじこめ効果をもたせる丸めに紡紀発光物質
よりは屈折率の小さいポリスチレン樹脂やポリウレタン
樹脂を使用する）。(Example of the invention) In Figure 2, which shows an example of the invention, 7 is a luminescent substance (
8 is a coating material (polystyrene resin or polyurethane resin, which has a lower refractive index than the bioluminescent material, is used for the rounding that has a light trapping effect).
９□、２は光検出器、１０１．２は増幅器、１１は光源
、１２は掃引装置、１３は信号解析装置、１４は放射線
強度分布表示装置をそれぞれ示す。１１の光源は、放射
線熱螢光物質を使用する場合はＣＯ２レーザあるいはＹ
ＡＧレーザを使用し、リン酸塩ガラスを使用する場合は
１発光スペクトルにλ１＝３６５ｎｍの波長を含む発光
素子を利用する。光源は掃引ｆ＆臘によって発光物質を
掃引し、そのときに発光物質に照射された放射線線量に
応じた光が発生する。この光は発光物質と被覆物質とで
形成されている先導波路によって伝送され、光検出器へ
到達する０光検出器からの信号は信号解析装置に入力さ
れ、掃引信号を用いて放射線強度分布に変換され、放射
線強度分布表示装置で表示される。9□, 2 is a photodetector, 101.2 is an amplifier, 11 is a light source, 12 is a sweep device, 13 is a signal analyzer, and 14 is a radiation intensity distribution display device. The light source 11 is a CO2 laser or Y when using a radiation thermal fluorescent substance.
When using an AG laser and using phosphate glass, a light emitting element including a wavelength of λ1=365 nm in one emission spectrum is used. The light source sweeps the light-emitting substance by a sweep f&, and at that time, light is generated according to the radiation dose irradiated to the light-emitting substance. This light is transmitted by a guiding wave path formed by a luminescent material and a coating material, and the signal from the 0 photodetector that reaches the photodetector is input to a signal analyzer, and a sweep signal is used to analyze the radiation intensity distribution. It is converted and displayed on a radiation intensity distribution display device.
（発明の効果）
（１１放射線の空間的強度分布を測定することかで睡る
０
（２）光導波路構造によって光の利用効率が大幅に向上
する１゜
（発明の変形例・応用例）
第３図は上記実施例で説明した基本単位を多数個並べて
２次元放射線検出器を構成した応用例である。一度発光
物質から逸脱した光が他のシ／チレータ中を伝搬する確
率は非常に少ないので、基本単位間のクロストーク（相
互干渉）は無視できる。(Effects of the invention) (11) Measuring the spatial intensity distribution of radiation makes it possible to fall asleep (2) Optical waveguide structure significantly improves the efficiency of light utilization 1゜ (Modifications and application examples of the invention) Figure 3 shows an application example in which a two-dimensional radiation detector is constructed by arranging a large number of the basic units explained in the above embodiment.The probability that light once deviated from the luminescent material will propagate through other citricators is very low. Therefore, crosstalk (mutual interference) between basic units can be ignored.
第４図（ａ） （ｂ） （Ｃ）は本発明の変形例で、（
→（鴫は被覆物質８中に二つの発光物質７１，７２を埋
め込んだ例、（Ｃ）は二層の被覆物質８１．８２を設け
、更にその表面に外部先遣蔽兼、内部光反射用膜１５を
掃引光りが掃引する部分を除いて付加するとともに、一
端面に反射膜１６を付けて光の利用効率を向上させ、ク
ロストークも抑制した変形例である。（Ｃ）の場合、発
光物質７の屈折率をｎ８、被覆物質Ｓ１．Ｓ、の屈折率
をそれぞれ町、１１２とし九とき、ｎｇ）ｎ１ンｎ２と
することが好ましい０その他、湾曲した発光物質を用い
た変形例も考えられる０FIGS. 4(a), (b), and (C) are modified examples of the present invention, (
→ (Shizu is an example in which two luminescent materials 71 and 72 are embedded in the coating material 8, and (C) is an example in which two layers of the coating material 81 and 82 are provided, and the surface is further coated with a film for external protection and internal light reflection. 15 is added except for the part where the sweeping light sweeps, and a reflective film 16 is attached to one end face to improve the light utilization efficiency and suppress crosstalk.In the case of (C), the luminescent material It is preferable that the refractive index of 7 is n8, and the refractive index of the coating material S1 is 112 and 9, ng)n1 and n2.Other modifications using curved luminescent materials are also possible. 0
４１図は従来例を示す図、第２図は本発明の一貞麿例を
示す図、ｓ３図は本発明の応用例を示す図、ｌ＠４図（
４）〜（Ｃ）は本発明の変形例を示す図である。
７・・・発光物質、 ８・・・被覆物質、９・・・光
検光器、１０・・・増幅器、１１・・・光源、１２・・
掃引装置、 １３・・・信号解析装置。
１４・・・放射ＩＩａ強度分布表示装置。
第２図
１４
第８図Figure 41 is a diagram showing a conventional example, Figure 2 is a diagram showing an example of the present invention, Figure s3 is a diagram showing an application example of the present invention, Figure 1@4 (
4) to (C) are diagrams showing modified examples of the present invention. 7... Luminescent substance, 8... Coating material, 9... Optical analyzer, 10... Amplifier, 11... Light source, 12...
Sweeping device, 13... Signal analysis device. 14... Radiation IIa intensity distribution display device. Figure 2 14 Figure 8
Claims (1)
光する物質を、その屈折率と異なる屈折率を有する一層
以上の物質で被覆して先導波路を構成し、外部からの加
熱あるいは光照射によって前記発光物質中で生じた光を
前記光導波路で伝送し、この光を光検出器で検出するこ
とを特徴とする放射線検出器０A guiding wavepath is constructed by coating a material that emits light by heating or irradiating it with light after irradiation with one or more layers of material having a refractive index different from that of the material. A radiation detector 0 characterized in that the light generated in the above is transmitted through the optical waveguide and this light is detected by a photodetector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7082A JPS58117476A (en) | 1982-01-05 | 1982-01-05 | Radiation detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7082A JPS58117476A (en) | 1982-01-05 | 1982-01-05 | Radiation detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58117476A true JPS58117476A (en) | 1983-07-13 |
Family
ID=11463915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7082A Pending JPS58117476A (en) | 1982-01-05 | 1982-01-05 | Radiation detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58117476A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03500681A (en) * | 1987-10-16 | 1991-02-14 | イーストマン・コダック・カンパニー | Powder diffraction inspection device |
| JP2000162724A (en) * | 1998-09-22 | 2000-06-16 | Japan Atom Energy Res Inst | Device for reading radiation image of imaging plate and method therefor |
| JP2002277554A (en) * | 2001-03-16 | 2002-09-25 | Wired Japan:Kk | Optical fiber and optical fiber cable |
| US6479829B1 (en) * | 1999-02-26 | 2002-11-12 | Agency Of Japan Atomic Energy Research Institute | Apparatus and method for detecting radiation that uses a stimulate phosphor |
| CN110645541A (en) * | 2018-06-27 | 2020-01-03 | 深圳市绎立锐光科技开发有限公司 | Light source device and vehicle lamp |
-
1982
- 1982-01-05 JP JP7082A patent/JPS58117476A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03500681A (en) * | 1987-10-16 | 1991-02-14 | イーストマン・コダック・カンパニー | Powder diffraction inspection device |
| JP2000162724A (en) * | 1998-09-22 | 2000-06-16 | Japan Atom Energy Res Inst | Device for reading radiation image of imaging plate and method therefor |
| US6479829B1 (en) * | 1999-02-26 | 2002-11-12 | Agency Of Japan Atomic Energy Research Institute | Apparatus and method for detecting radiation that uses a stimulate phosphor |
| US6825479B2 (en) | 1999-02-26 | 2004-11-30 | Japan Atomic Energy Research Institute | Apparatus and method for detecting radiation that uses a stimulate phosphor |
| US6998624B2 (en) | 1999-02-26 | 2006-02-14 | Japan Atomic Energy Research Institute | Apparatus and method for detecting radiation that uses a stimulate phosphor |
| JP2002277554A (en) * | 2001-03-16 | 2002-09-25 | Wired Japan:Kk | Optical fiber and optical fiber cable |
| CN110645541A (en) * | 2018-06-27 | 2020-01-03 | 深圳市绎立锐光科技开发有限公司 | Light source device and vehicle lamp |
| CN110645541B (en) * | 2018-06-27 | 2021-12-21 | 深圳市绎立锐光科技开发有限公司 | Light source device and vehicle lamp |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Huston et al. | Remote optical fiber dosimetry | |
| US5560712A (en) | Optical systems for sensing temperature and thermal infrared radiation | |
| Bøtter-Jensen et al. | Advances in luminescence instrument systems | |
| US5302025A (en) | Optical systems for sensing temperature and other physical parameters | |
| Polf et al. | Real-time luminescence from Al2O3 fiber dosimeters | |
| JPH05505679A (en) | Method and apparatus for optically measuring analyte concentration | |
| JPS6145794B2 (en) | ||
| JPH10132941A (en) | Radiation detection for radioactive clad scintillating fiber | |
| Ramsey et al. | Radiation effects on heated optical fibers | |
| JPH0511060A (en) | Two-dimensional mosaic scintillation detector | |
| WO2011050441A1 (en) | Fluorescence-based light emitting device | |
| EP0209186A2 (en) | Image recording and readout device based on light-stimulable phosphors | |
| JPS60155991A (en) | Detection system of neutron or gamma-ray or both neutron andgamma-ray | |
| US4885471A (en) | Ultraviolet radiometer | |
| JPS58117476A (en) | Radiation detector | |
| Salomoni et al. | Photonic crystal slabs applied to inorganic scintillators | |
| US7652764B2 (en) | Method for reconstructing a fluorescence-enhanced optic tomography image of an object with any outline | |
| Bøtter-Jensen et al. | Optically stimulated luminescence techniques in retrospective dosimetry | |
| Xie et al. | Methods to improve light transport efficiency in LYSO crystals based on characteristics of optical reflectance | |
| Tickner et al. | PHOTON–An optical Monte Carlo code for simulating scintillation detector responses | |
| JPS58117477A (en) | Radiation detector | |
| JP2677369B2 (en) | Infrared measuring device | |
| JP3262149B2 (en) | Infrared detector and excitation method thereof | |
| JPH02100202A (en) | Point light source device | |
| US4232228A (en) | Method of lightening radiation darkened optical elements |