JP2003167097A - Planar radiation source and method of manufacturing the same - Google Patents
Planar radiation source and method of manufacturing the sameInfo
- Publication number
- JP2003167097A JP2003167097A JP2001364461A JP2001364461A JP2003167097A JP 2003167097 A JP2003167097 A JP 2003167097A JP 2001364461 A JP2001364461 A JP 2001364461A JP 2001364461 A JP2001364461 A JP 2001364461A JP 2003167097 A JP2003167097 A JP 2003167097A
- Authority
- JP
- Japan
- Prior art keywords
- radiation source
- plastic
- ink
- conductor
- planar
- 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
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- Ink Jet (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】 本願発明は、原子力工学分
野における放射能標準線源作製技術に関するものであ
る。TECHNICAL FIELD The present invention relates to a radioactivity standard radiation source manufacturing technique in the field of nuclear engineering.
【0002】[0002]
【従来の技術】 放射能面線源は、通常ハンドフットク
ロスモニタ(手足、衣服の放射能汚染検査装置)及びゲ
ートモニタ等の、大面積を測定する機器の動作確認及び
校正等に用いられており、その一例を図1に示す。これ
らの線源は、放射性溶液をろ紙及びエッチピット(微細
な孔)の作製されたアルミ板に滴下、乾燥させた後、表
面研磨して作製される。又は、エポキシ樹脂及びポリエ
チレン等のプラスチックに混ぜ込み、薄く引き延ばして
作製されてきた。図1の左下の小さな円盤は、参照用の
点線源である。2. Description of the Related Art A radioactive surface radiation source is usually used for checking the operation and calibration of a large area measuring device such as a hand foot cross monitor (radiation contamination inspection device for limbs and clothes) and a gate monitor. An example thereof is shown in FIG. These radiation sources are prepared by dropping a radioactive solution onto a filter paper and an aluminum plate on which etch pits (fine holes) have been formed, drying and then surface polishing. Alternatively, it has been manufactured by mixing it with an epoxy resin and a plastic such as polyethylene and then stretching it thinly. The small disk in the lower left of FIG. 1 is a point source for reference.
【0003】図2は、上記図1に示された面状放射線源
の放射能分布をイメージプレートにより撮影したもので
ある。右上部の四角形の部分が線源を滴下して作製した
面状線源測定結果である。このように、滴下して作製し
た面状線源では、面状とはいえ濃度は均一ではない。FIG. 2 is an image of the radioactivity distribution of the planar radiation source shown in FIG. 1 taken by an image plate. The square portion on the upper right is the result of the measurement of the planar radiation source prepared by dropping the radiation source. As described above, in the planar radiation source prepared by dropping, the density is not uniform although it is planar.
【0004】[0004]
【発明が解決しようとする課題】 このため、従来の滴
下乾燥の手法では、一様性に著しい問題があり、また、
有機膜においては、一様性は得られるものの、任意の濃
度勾配をもたせることは、不可能であった。また、いず
れも大量生産には適さず、一品物であるため、高価で、
線源相互の均質性にも問題があった。Therefore, the conventional dripping and drying method has a significant problem in uniformity, and
In the organic film, uniformity was obtained, but it was impossible to give an arbitrary concentration gradient. In addition, neither is suitable for mass production, it is expensive because it is a single item.
There was also a problem with the homogeneity of the radiation sources.
【0005】[0005]
【課題を解決するための手段】 本願発明は、このよう
な従来の作製法とは異なり、大量生産に適し、任意の形
状、任意の濃度勾配を持たせることを可能とするため、
プリンタのインクに放射性同位元素を混入して印刷する
ことにより、簡便であるにもかかわらず均質な放射線源
作製を可能としたものである。Means for Solving the Problems The present invention is different from the conventional manufacturing method as described above, and is suitable for mass production, and has an arbitrary shape and an arbitrary concentration gradient.
By printing the ink of the printer mixed with the radioactive isotope, it is possible to prepare a uniform radiation source despite its simplicity.
【0006】[0006]
【実施例】 面状放射線源分布の一例を第3図に示す。
ここでは、黄色のインクに放射性物質を混入し、色調を
1から10%濃度まで1%刻み、さらに100%濃度が
印刷されている。1000,1E4、1E5は他の色で
印刷したイメージで、1桁づつ異なる濃度で他の赤、
青、黒の色素に放射性物質を混入することにより、対数
目盛にも簡単に対応可能である。第4図は、図3の放射
能分布をイメージングプレートで撮像した結果である。
この例では黄色以外の色素に放射性物質を混入していな
いため、対数目盛部分が完成されていないものの、任意
の形状と濃度勾配、さらには文字も放射線源の一部とし
て明確に撮像されている。EXAMPLE An example of a planar radiation source distribution is shown in FIG.
Here, a radioactive substance is mixed in the yellow ink, and the color tone is divided by 1% from 1 to 10% density, and further 100% density is printed. 1000, 1E4, and 1E5 are images printed in other colors, and other reds with different densities by one digit
By mixing radioactive materials in blue and black dyes, it is possible to easily deal with logarithmic scales. FIG. 4 shows the result of imaging the radioactivity distribution of FIG. 3 with an imaging plate.
In this example, the radioactive substances are not mixed with the dyes other than yellow, so the logarithmic scale part is not completed, but any shape and concentration gradient, and even the letters are clearly imaged as part of the radiation source. .
【0007】面状放射線源は、その取り扱いを簡便にす
るため、表面をこすった程度の普通の使用においては、
密封性が保たれる必要がある。また、放射能線源は、α
線又はβ線といった荷電粒子を放出するため、導電性の
ない状態においてはチャージアップを生じ、放電や線源
表面からの荷電粒子放出率の変化を引き起こす。そこ
で、印刷した表面に、アルミコートした薄いプラスチッ
クのカバーを被せることにより、被覆とチャージアップ
防止を行うことができる。In order to simplify the handling of the surface radiation source, the surface radiation source should be rubbed on its surface during normal use.
The hermeticity needs to be maintained. Also, the radiation source is α
Since charged particles such as rays or β rays are emitted, charge-up occurs in a non-conductive state, which causes discharge and changes in the charged particle emission rate from the surface of the radiation source. Therefore, by covering the printed surface with an aluminum-coated thin plastic cover, coating and charge-up prevention can be performed.
【0008】又は、予め片側にアルミコートを施したビ
ニールをラミネートした紙の裏側から水溶性インクで印
刷し、印刷面に背板をあてがう等により、密封性と導電
性をもたせることができる。このとき、線源表面を覆う
物質の質量は、特にβ線源の場合は、該β線のエネルギ
ーに対応した半価透過値以下(数十mg程度)の厚さとし
なければならない。Alternatively, it is possible to provide sealing property and conductivity by printing with a water-soluble ink from the back side of a paper laminated with vinyl coated with aluminum on one side in advance and applying a back plate to the printed surface. At this time, the mass of the substance covering the surface of the radiation source must be a thickness equal to or less than the half-value transmission value (about several tens of mg) corresponding to the energy of the β-ray, especially in the case of the β-ray source.
【0009】X線フィルム及びその代用として広く使用
されているイメージングプレートの位置分解能及び感度
校正を行うため、一定間隔の格子状パターン又は濃度勾
配を持たせた等高線指標型の面線源を印刷により作製
し、その一面に合成ゴム系接着剤を軽くスプレイして弱
粘着性を持たせることにより、X線フィルムあるいはイ
メージングプレート表面に直接張り付け、位置分解能試
験又は感度校正を簡便に実施可能とする。In order to calibrate the position resolution and sensitivity of an X-ray film and an imaging plate which is widely used as a substitute for the X-ray film, a grid-like pattern at regular intervals or a contour index type surface radiation source having a density gradient is printed. It is prepared and lightly sprayed with a synthetic rubber adhesive on one surface thereof so as to have a weak tackiness, so that it can be directly attached to the surface of an X-ray film or an imaging plate to easily perform a position resolution test or sensitivity calibration.
【0010】[0010]
【発明の効果】 上記のように、従来の方法及び物に比
べて、極めて安価に、且つ均質な放射能面線源の供給を
可能とし、また、その活用法として、放射能濃度勾配又
は精密パターンを描かせることにより、位置分解能又は
感度を直接且つ簡便に行えるようにした。As described above, compared to the conventional methods and products, it is possible to supply a radioactive surface radiation source that is extremely inexpensive and uniform, and the utilization method thereof is a radioactive concentration gradient or a precise pattern. By drawing, the position resolution or sensitivity can be directly and easily performed.
【図1】従来の面状放射線源。FIG. 1 is a conventional planar radiation source.
【図2】 図1の面状線源の放射能分布をイメージプレ
ートで撮像した結果。FIG. 2 is a result of imaging the radioactivity distribution of the planar radiation source of FIG. 1 with an image plate.
【図3】 黄色の色素に放射能を入れたテストパターン
例。FIG. 3 is an example of a test pattern in which radioactivity is added to a yellow dye.
【図4】 図3の面状線源の放射能分布をイメージプレ
ートで撮像した結果。FIG. 4 is a result of imaging the radioactivity distribution of the planar radiation source of FIG. 3 with an image plate.
Claims (9)
ンタのインクに放射性同位元素を混入させ、任意の濃度
で印刷することにより作製することを特徴とする面状放
射線源の作製方法。1. A method for producing a planar radiation source, which comprises mixing a radioisotope in ink of a printer and printing the mixture at an arbitrary concentration.
入させたことを特徴とする放射線源。2. A radiation source characterized by mixing a radioisotope with ink of a printer.
ンクにより、任意の濃度で印刷されていることを特徴と
する面状放射線源。3. A planar radiation source characterized by being printed at an arbitrary density with ink of a printer containing a radioactive isotope.
着したフィルム状プラスチックスで被覆することにより
密封性と表面の電気伝導性を持たせたことを特徴とする
請求項3記載の面状放射線源。4. The surface according to claim 3, wherein the printed surface is covered with an electric conductor or a film-like plastic to which the electric conductor is adhered so as to have sealing property and surface electric conductivity. Radiation source.
記プラスチックスは、ビニールであることを特徴とする
請求項4記載の面上放射線源。5. The surface radiation source according to claim 4, wherein the conductor is aluminum, and the plastic is vinyl.
ム状プラスチックスをラミネートした紙の裏側から、水
溶性の上記インクで印刷し、印刷面は背板に張り付けて
固定することにより、密封性と表面の電気伝導性を持た
せたことを特徴とする請求項3記載の面状放射線源。6. Sealing is achieved by printing with the water-soluble ink from the back side of a paper laminated with a film-like plastic which is previously coated with a conductor on one side, and by sticking the printed surface to a back plate and fixing it. The planar radiation source according to claim 3, wherein the surface has electrical conductivity.
記プラスチックスは、ビニールであることを特徴とする
請求項6記載の面上放射線源。7. The on-plane radiation source according to claim 6, wherein the conductor is aluminum and the plastic is vinyl.
質を持たせ、フィルム状プラスチックスに張り付けるこ
とにより、直接に荷電粒子放出率及びγ線放出率標準と
して使用可能とした請求項3記載の面状放射線源。8. The surface radiation source is provided with a weak adhesive property and is attached to a film plastic so that it can be directly used as a charged particle emission rate and γ ray emission rate standard. Item 2. The planar radiation source according to Item 3.
のであることを特徴とする請求項8記載の面上放射線
源。9. The on-plane radiation source according to claim 8, wherein the weak tackiness is obtained by adhering an adhesive.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001364461A JP2003167097A (en) | 2001-11-29 | 2001-11-29 | Planar radiation source and method of manufacturing the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001364461A JP2003167097A (en) | 2001-11-29 | 2001-11-29 | Planar radiation source and method of manufacturing the same |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2003167097A true JP2003167097A (en) | 2003-06-13 |
Family
ID=19174651
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2001364461A Pending JP2003167097A (en) | 2001-11-29 | 2001-11-29 | Planar radiation source and method of manufacturing the same |
Country Status (1)
Country | Link |
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JP (1) | JP2003167097A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010048804A (en) * | 2008-07-31 | 2010-03-04 | Eckert & Ziegler Isotope Products Inc | Method and plotting system for forming radiation flood source, and radiation flood source |
-
2001
- 2001-11-29 JP JP2001364461A patent/JP2003167097A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010048804A (en) * | 2008-07-31 | 2010-03-04 | Eckert & Ziegler Isotope Products Inc | Method and plotting system for forming radiation flood source, and radiation flood source |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A131 | Notification of reasons for refusal |
Effective date: 20051115 Free format text: JAPANESE INTERMEDIATE CODE: A131 |
|
A02 | Decision of refusal |
Effective date: 20060322 Free format text: JAPANESE INTERMEDIATE CODE: A02 |