CA2236295A1 - Detecteur multiphotonique a bruit de fond ultra-bas - Google Patents
Detecteur multiphotonique a bruit de fond ultra-bas Download PDFInfo
- Publication number
- CA2236295A1 CA2236295A1 CA 2236295 CA2236295A CA2236295A1 CA 2236295 A1 CA2236295 A1 CA 2236295A1 CA 2236295 CA2236295 CA 2236295 CA 2236295 A CA2236295 A CA 2236295A CA 2236295 A1 CA2236295 A1 CA 2236295A1
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- CA
- Canada
- Prior art keywords
- detector
- pulse
- detectors
- pmt
- sample
- 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.)
- Abandoned
Links
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
- G01T7/08—Means for conveying samples received
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/204—Measuring radiation intensity with scintillation detectors the detector being a liquid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/208—Circuits specially adapted for scintillation detectors, e.g. for the photo-multiplier section
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)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Light Receiving Elements (AREA)
Abstract
Un détecteur multiphotonique à bruit de fond ultra-bas pour radio-isotopes (20) a un bruit de fond d'environ un coup par jour et peut détecter une attomole de matériau. Deux détecteurs photoniques de rayons gamma et de rayons X sont opposés l'un à l'autre, chacun comprenant de préférence un cristal de scintillation (22) et un tube de photomultiplication (26). Un séparateur (32) et un porte-échantillon (34) destiné à un échantillon (36) marqué par un radio-isotope tel que I?125¿ sont placés en sandwich entre les détecteurs. Chacun de ceux-ci convertit les émissions provenant du radio-isotope en impulsions électriques de sortie dans une base (30), impulsions qui sont ensuite soumises à un traitement de signaux pour analyse de la forme des impulsions, discrimination entre évènements coïncidents et évènements non coïncidents, et quantification du radio-isotope. Les matériaux et les composants des détecteurs sont choisis de façon à minimiser le bruit de fond et sont protégés des rayonnements externes dans un blindage composite (55). Des détecteurs fonctionnant sur différents principes et des porte-échantillons de configurations différentes peuvent être utilisés. Le dispositif peut en outre être conçu pour résoudre et donner des images de séries d'échantillons bidimensionnels.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US710895P | 1995-10-31 | 1995-10-31 | |
| US60/007,108 | 1995-10-31 | ||
| US08/669,970 | 1996-06-25 | ||
| US08/669,970 US5866907A (en) | 1993-10-12 | 1996-06-25 | Ultralow background multiple photon detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2236295A1 true CA2236295A1 (fr) | 1997-05-09 |
Family
ID=26676523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2236295 Abandoned CA2236295A1 (fr) | 1995-10-31 | 1996-10-31 | Detecteur multiphotonique a bruit de fond ultra-bas |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0866986A1 (fr) |
| JP (1) | JPH11514742A (fr) |
| AU (1) | AU700518B2 (fr) |
| BR (1) | BR9611171A (fr) |
| CA (1) | CA2236295A1 (fr) |
| MX (1) | MX9803468A (fr) |
| PL (1) | PL326564A1 (fr) |
| WO (1) | WO1997016746A1 (fr) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5854084A (en) * | 1996-07-12 | 1998-12-29 | Biotraces, Inc. | Enhanced chromatography using multiphoton detection |
| JP3380175B2 (ja) * | 1998-09-24 | 2003-02-24 | アロカ株式会社 | 放射線測定器 |
| GB0029430D0 (en) | 2000-12-04 | 2001-01-17 | Univ Leicester | Devices for imaging radionuclide emissions |
| EP1899747A4 (fr) * | 2005-07-01 | 2016-12-07 | Warburton William K | Detection de rayonnements coincidents dans un transducteur unique par analyse de forme d'impulsion |
| US7807973B2 (en) * | 2008-08-01 | 2010-10-05 | Pulsetor, Llc | Pileup rejection in an energy-dispersive radiation spectrometry system |
| US9297909B2 (en) * | 2014-04-18 | 2016-03-29 | Perkinelmer Health Sciences, Inc. | Guard efficiency compensation system and method |
| JP5836465B1 (ja) * | 2014-10-20 | 2015-12-24 | 株式会社日立パワーソリューションズ | 放射線計測装置および放射線計測方法 |
| CN104570035B (zh) * | 2014-12-26 | 2017-04-12 | 北京放射性核素实验室 | 一种放射性气体核素β射线自吸收校正方法 |
| GB2557926B (en) * | 2016-12-16 | 2021-03-31 | Sensinite Oy | Apparatus for measuring radiation |
| CN106443807B (zh) * | 2016-12-27 | 2018-05-04 | 成都理工大学 | 一种放射源搜寻装置和搜寻方法 |
| CN106768401B (zh) * | 2017-03-24 | 2023-03-21 | 中国工程物理研究院应用电子学研究所 | 一种微能量脉冲激光光子数测量装置及方法 |
| US10422887B2 (en) * | 2017-04-06 | 2019-09-24 | Prismatic Sensors Ab | Photon-counting x-ray detector system having an adaptive anti-coincidence system |
| WO2019050862A2 (fr) * | 2017-09-06 | 2019-03-14 | The United States Of America, As Represented By The Secretary, Department Of Health And Human Services | Étalonneur de micro-dose |
| CN110515115B (zh) * | 2018-05-22 | 2022-11-25 | 中国辐射防护研究院 | 一种用于伽马谱峰面积求解的评估方法 |
| CN109725342A (zh) * | 2019-01-01 | 2019-05-07 | 中国人民解放军63653部队 | 一种用于现场低能γ射线测量的散射抑制探测结构 |
| CN110501740B (zh) * | 2019-08-23 | 2024-12-03 | 南京核安核能科技有限公司 | 一种本底数字化反康反宇宙射线谱仪HPGe探测器探测方法 |
| CN110780331A (zh) * | 2019-11-06 | 2020-02-11 | 中国原子能科学研究院 | 一种非破坏性快速分析溶液中微痕钚的测量装置 |
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Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4418282A (en) * | 1981-06-29 | 1983-11-29 | Beckman Instruments, Inc. | Method and apparatus for determining random coincidence count rate in a scintillation counter utilizing the coincidence technique |
| US4967084A (en) * | 1989-02-02 | 1990-10-30 | The University Of Michigan | Multi-sample scintillation counter using position-sensitive detector |
-
1996
- 1996-10-31 JP JP9517408A patent/JPH11514742A/ja active Pending
- 1996-10-31 BR BR9611171-2A patent/BR9611171A/pt unknown
- 1996-10-31 CA CA 2236295 patent/CA2236295A1/fr not_active Abandoned
- 1996-10-31 PL PL32656496A patent/PL326564A1/xx unknown
- 1996-10-31 EP EP96941945A patent/EP0866986A1/fr not_active Withdrawn
- 1996-10-31 AU AU11154/97A patent/AU700518B2/en not_active Ceased
- 1996-10-31 WO PCT/US1996/016968 patent/WO1997016746A1/fr not_active Ceased
-
1998
- 1998-04-30 MX MX9803468A patent/MX9803468A/es not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| MX9803468A (es) | 1998-11-29 |
| AU700518B2 (en) | 1999-01-07 |
| BR9611171A (pt) | 2001-10-23 |
| EP0866986A1 (fr) | 1998-09-30 |
| JPH11514742A (ja) | 1999-12-14 |
| PL326564A1 (en) | 1998-09-28 |
| WO1997016746A1 (fr) | 1997-05-09 |
| AU1115497A (en) | 1997-05-22 |
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