JPH09500200A - 感度の増大した放射線検出方法と測定 - Google Patents
感度の増大した放射線検出方法と測定Info
- Publication number
- JPH09500200A JPH09500200A JP6521082A JP52108294A JPH09500200A JP H09500200 A JPH09500200 A JP H09500200A JP 6521082 A JP6521082 A JP 6521082A JP 52108294 A JP52108294 A JP 52108294A JP H09500200 A JPH09500200 A JP H09500200A
- Authority
- JP
- Japan
- Prior art keywords
- center
- luminescence
- measuring method
- radiation
- wavelength
- 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.)
- Granted
Links
- 230000005855 radiation Effects 0.000 title claims abstract description 50
- 230000001965 increasing effect Effects 0.000 title claims description 10
- 238000005259 measurement Methods 0.000 title description 20
- 238000001514 detection method Methods 0.000 title description 4
- 230000035945 sensitivity Effects 0.000 title description 4
- 238000004020 luminiscence type Methods 0.000 claims abstract description 79
- 230000003287 optical effect Effects 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000002178 crystalline material Substances 0.000 claims abstract description 9
- 239000000126 substance Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 32
- 238000010521 absorption reaction Methods 0.000 claims description 29
- 230000005284 excitation Effects 0.000 claims description 25
- 238000010438 heat treatment Methods 0.000 claims description 18
- 238000000137 annealing Methods 0.000 claims description 8
- 230000001747 exhibiting effect Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000000691 measurement method Methods 0.000 claims 3
- 230000004931 aggregating effect Effects 0.000 claims 1
- 230000001427 coherent effect Effects 0.000 claims 1
- 230000009467 reduction Effects 0.000 abstract description 3
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 104
- 239000013078 crystal Substances 0.000 description 64
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 37
- 238000000862 absorption spectrum Methods 0.000 description 18
- 235000013024 sodium fluoride Nutrition 0.000 description 18
- 239000011775 sodium fluoride Substances 0.000 description 18
- 238000004980 dosimetry Methods 0.000 description 15
- 230000004044 response Effects 0.000 description 12
- 239000003513 alkali Substances 0.000 description 11
- 206010073306 Exposure to radiation Diseases 0.000 description 10
- 150000004820 halides Chemical class 0.000 description 10
- 238000000295 emission spectrum Methods 0.000 description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 230000005865 ionizing radiation Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 238000001748 luminescence spectrum Methods 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004061 bleaching Methods 0.000 description 3
- 230000005251 gamma ray Effects 0.000 description 3
- 239000003102 growth factor Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000000638 stimulation Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000002796 luminescence method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000009994 optical bleaching Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 230000004936 stimulating effect Effects 0.000 description 2
- MCSXGCZMEPXKIW-UHFFFAOYSA-N 3-hydroxy-4-[(4-methyl-2-nitrophenyl)diazenyl]-N-(3-nitrophenyl)naphthalene-2-carboxamide Chemical compound Cc1ccc(N=Nc2c(O)c(cc3ccccc23)C(=O)Nc2cccc(c2)[N+]([O-])=O)c(c1)[N+]([O-])=O MCSXGCZMEPXKIW-UHFFFAOYSA-N 0.000 description 1
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- 238000012935 Averaging Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- CPBQJMYROZQQJC-UHFFFAOYSA-N helium neon Chemical compound [He].[Ne] CPBQJMYROZQQJC-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000005297 pyrex Substances 0.000 description 1
- 238000010223 real-time analysis Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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
- G01T1/105—Read-out devices
-
- 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
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)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Measurement Of Radiation (AREA)
- Luminescent Compositions (AREA)
- Light Receiving Elements (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.損傷中心吸収を示す結晶質物質体で放射線線量を測定する方法であって、 (a)前記の結晶質物質体を放射線に暴露させ; (b)前記の暴露された物質体をその損傷中心のルミネッセンスが増大するよう 処理し; (c)前記の処理された物質体を、ピーク損傷中心吸収中心に近い第1の波長の 光学的放射線を用いて励起させ;そして、 (d)該第1の波長よりも長い第2の波長のルミネッセンスによって前記の励起 された物質体から発せられた光学的エネルギーを測定する; 各工程を含む測定方法。 2.請求項1に記載の測定方法であって、処理工程が、 (a)温度とそれに対応した所定の時間を選択し; (b)該暴露された物質体を前記の温度で前記の時間にわたって加熱し; (c)前記の加熱された物質体を周囲温度まで冷却させる; 各工程を含む、測定方法。 3.請求項2に記載の測定方法であって、 前記温度が約300℃〜約600℃であって、前記所定の時間が約1時間〜約 2時間である、測定方法。 4.請求項1に記載の測定方法であって、 放射線に暴露させるに先立って、前記物質体の損傷中心を消去する工程を更に 含む、測定方法。 5.請求項4に記載の測定方法であって、消去工程が、 該物質体を少なくとも約9時間にわたって約550℃の温度まで加熱すること を含む、測定方法。 6.請求項1に記載の測定方法であって、 処理工程が最初の損傷中心を凝集させて二次的な損傷中心とする工程である、 測定方法。 7.請求項6に記載の測定方法であって、 主要な損傷中心がF中心であり、二次的な損傷中心がM中心である、測定方法 。 8.請求項6に記載の測定方法であって、 励起工程を、二次的な損傷中心のピーク吸収波長に近い波長を用いて行う、測 定方法。 9.請求項1に記載の測定方法であって、 処理工程は、結晶質のバックグランドを約175,000カウント又はそれ未 満まで減少させるアニール処理である、測定方法。 10.請求項1に記載の測定方法であって、 励起はコヒーレントな光学的放射線を用いて行う、測定方法。
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US032,876 | 1993-03-18 | ||
US08/032,876 US5354997A (en) | 1989-11-03 | 1993-03-18 | Method for increased sensitivity of radiation detection and measurement |
US08/032,876 | 1993-03-18 | ||
PCT/US1994/002426 WO1994022034A1 (en) | 1993-03-18 | 1994-03-07 | Method for increased sensitivity of radiation detection and measurement |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH09500200A true JPH09500200A (ja) | 1997-01-07 |
JP3181594B2 JP3181594B2 (ja) | 2001-07-03 |
Family
ID=21867323
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52108294A Expired - Lifetime JP3181594B2 (ja) | 1993-03-18 | 1994-03-07 | 感度の増大した放射線検出方法と測定 |
Country Status (8)
Country | Link |
---|---|
US (1) | US5354997A (ja) |
EP (1) | EP0689680B1 (ja) |
JP (1) | JP3181594B2 (ja) |
AT (1) | ATE169743T1 (ja) |
CA (1) | CA2154780C (ja) |
DE (1) | DE69412471T2 (ja) |
ES (1) | ES2121198T3 (ja) |
WO (1) | WO1994022034A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6423164B1 (en) | 1995-11-17 | 2002-07-23 | Reynolds Metals Company | Method of making high strength aluminum sheet product and product therefrom |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2192579T3 (es) * | 1994-06-03 | 2003-10-16 | Battelle Memorial Institute | Procedimiento para medir dosis de radiacion. |
US5637875A (en) * | 1995-07-07 | 1997-06-10 | Battelle Memorial Institute | Method of enhancing radiation response of radiation detection materials |
US5962857A (en) * | 1995-09-22 | 1999-10-05 | The Board Of Regents For Oklahoma State University | Method for the fast determination of an unknown absorbed dose of radiation with high sensitivity using optically stimulated luminescence |
US5892234A (en) * | 1995-09-22 | 1999-04-06 | The Board Of Regents Of Oklahoma State University | Method for determining an unknown absorbed dose of radiation using optically stimulated luminescence |
US6765208B1 (en) * | 2001-09-17 | 2004-07-20 | Sandia Corporation | Thermoluminescence dosimeters with narrow bandpass filters |
US6846434B2 (en) * | 2001-12-04 | 2005-01-25 | Landauer, Inc. | Aluminum oxide material for optical data storage |
US7098470B2 (en) * | 2001-12-04 | 2006-08-29 | Landauer, Inc. | Method for non-destructive measuring of radiation dose |
US7009181B1 (en) * | 2004-08-31 | 2006-03-07 | Battelle Memorial Institute | Apparatus and method for OSL-based, remote radiation monitoring and spectrometry |
US7499090B2 (en) | 2005-01-27 | 2009-03-03 | Datalogic Scanning, Inc. | Rolling-reset imager with optical filter |
US9530968B2 (en) * | 2005-02-15 | 2016-12-27 | Semiconductor Energy Laboratory Co., Ltd. | Light emitting element and light emitting device |
US8258877B2 (en) * | 2009-03-18 | 2012-09-04 | University Of Southern California | Feed-back and feed-forward systems and methods to reduce oscillator phase-noise |
US8541761B2 (en) * | 2010-01-12 | 2013-09-24 | Landauer, Inc. | Portable dosimeter |
CA2795900C (en) | 2010-04-09 | 2015-06-30 | Landauer, Inc. | Power system for dosimeter reader |
US9480448B2 (en) * | 2014-07-23 | 2016-11-01 | General Electric Company | System and method for use in mapping a radiation dose applied in an angiography imaging procedure of a patient |
USD771089S1 (en) | 2014-07-23 | 2016-11-08 | General Electric Company | Display screen or portion thereof with graphical user interface for a radiation dose mapping system |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4780375A (en) * | 1985-04-02 | 1988-10-25 | Fuji Photo Film Co., Ltd. | Phosphor, and radiation image storage panel |
IT1196938B (it) * | 1986-07-09 | 1988-11-25 | Minnesota Mining & Mfg | Metodo per registrare e riprodurre l'immagine di una radiazione, pannello per la memorizzazione dell'immagine di una radiazione, fosfori fotostimolabili e motodo per ottenere detti fosfori stimolabili |
US5025159A (en) * | 1988-06-29 | 1991-06-18 | Battelle Memorial Institute | Method for detecting radiation dose utilizing thermoluminescent material |
US5272348A (en) * | 1989-11-03 | 1993-12-21 | Battelle Memorial Institute | Method for radiation detection and measurement |
-
1993
- 1993-03-18 US US08/032,876 patent/US5354997A/en not_active Expired - Lifetime
-
1994
- 1994-03-07 AT AT94911478T patent/ATE169743T1/de not_active IP Right Cessation
- 1994-03-07 JP JP52108294A patent/JP3181594B2/ja not_active Expired - Lifetime
- 1994-03-07 WO PCT/US1994/002426 patent/WO1994022034A1/en active IP Right Grant
- 1994-03-07 CA CA002154780A patent/CA2154780C/en not_active Expired - Lifetime
- 1994-03-07 ES ES94911478T patent/ES2121198T3/es not_active Expired - Lifetime
- 1994-03-07 EP EP94911478A patent/EP0689680B1/en not_active Expired - Lifetime
- 1994-03-07 DE DE69412471T patent/DE69412471T2/de not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6423164B1 (en) | 1995-11-17 | 2002-07-23 | Reynolds Metals Company | Method of making high strength aluminum sheet product and product therefrom |
Also Published As
Publication number | Publication date |
---|---|
US5354997A (en) | 1994-10-11 |
CA2154780A1 (en) | 1994-09-29 |
EP0689680B1 (en) | 1998-08-12 |
ES2121198T3 (es) | 1998-11-16 |
CA2154780C (en) | 2001-04-17 |
EP0689680A1 (en) | 1996-01-03 |
DE69412471T2 (de) | 1999-04-29 |
JP3181594B2 (ja) | 2001-07-03 |
ATE169743T1 (de) | 1998-08-15 |
WO1994022034A1 (en) | 1994-09-29 |
DE69412471D1 (de) | 1998-09-17 |
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