专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明公开

EP1360546A1 RADIATION DETECTOR USING POLYMER-DISPERSED LIQUID CRYSTAL CELL 审中-公开
标题翻译：辐射检测器具有聚合物分散液晶电池中使用
公开(公告)号：EP1360546A1
公开(公告)日：2003-11-12
申请号：EP01991489.4
申请日：2001-12-21
申请人： Board of Regents,The University of Texas System
发明人： SHARMA, Suresch, C.
IPC分类号： G02F1/13 , G02F1/1333 , G03H1/04 , G03H1/00 , G03C5/00 , G03B11/00
CPC分类号： G01T1/204 , G02F1/1334
摘要： Generally, and in one form, the present invention is a device for the measurement of radiant energy using a polymer dispersed liquid crystal cell or PDLC 100. In another form, the present invention is a device for the detection of ionizing radiation. The PDLC 100 sits between two windos 102 and together they form a PDLC cell 103. The only limitation on the window material is that it be substantially transparent to the wavelenght to the light source 110 (vide infra). An electrical signal generator 104 is connected to the cell 103 to provide a constant electrical field tothe cell 103. The waveform generated by the elctrical signal generator can be any alternating current waveform. The cell is housed in a light-tight box 106 that is fitted with an aperture 108. Also contained withing the light-tight box 106 are a lgiht source 110 and a light detector 112.

2. 发明授权

EP0691549B1 A scintillation counting system using scintillator capsules 失效
标题翻译：闪烁系统采用的闪烁体胶囊
公开(公告)号：EP0691549B1
公开(公告)日：2002-09-11
申请号：EP95201510.5
申请日：1995-06-08
申请人： Packard Bioscience B.V.
发明人： Thomson, James , Bösel, Herbert Manfred , Ter Wiel, Jan , Kremer, Gerhard Heinrich , Van Lune, Harry
IPC分类号： G01T1/204 , B01J13/02 , C09K11/06
CPC分类号： G01T1/204

3. 发明公开

EP0801688A4 IMPROVED QUANTITATION OF GAMMA AND X-RAY EMITTING ISOTOPES 失效
标题翻译：改进的测定伽玛 - 和动物X射线EMMI ENDS同位素
公开(公告)号：EP0801688A4
公开(公告)日：1999-08-04
申请号：EP94930101
申请日：1994-10-12
申请人： BIOTRACES INC
发明人： DRUKIER ANDRZEJ K
IPC分类号： G01N23/00 , C12Q1/68 , G01N33/60 , G01T1/167 , G01T1/20 , G01T1/204 , G01T1/208 , G01T1/24 , G01T7/08 , H01L31/09 , G01N33/534 , G01N33/569 , G01T1/00 , G01T1/161 , G21H5/02 , H01J47/00 , H01L25/00
CPC分类号： G01T7/08 , G01N33/60 , G01T1/2008 , G01T1/204 , G01T1/208 , Y10S436/804 , Y10S436/807 , Y10T436/13
摘要： For isotopes decaying by capture of an inner shell electron by the nucleus, coincident emission of X-ray and gamma photons may occur. The X-ray results from the drop of an outer shell electron to fill the S shell. The gamma results from the transition of the excited daughter nucleus to a lower energy state. The invention disclosed is a Coincident Gamma and X-ray Detector (CGXD) which achieves extraordinary background rejection by a synergistic combination of coincident counting and other background suppresion measures. Whereas the background registred by single gamma counters is of the order of 20-40 counts per minute, a CGXD optimized for the electron capture radioisotope I has a background of about one count per day.

4. 发明公开

EP0866986A1 ULTRALOW BACKGROUND MULTIPLE PHOTON DETECTOR 失效
标题翻译：多光子探测器以非常低的背景噪音安排
公开(公告)号：EP0866986A1
公开(公告)日：1998-09-30
申请号：EP96941945.0
申请日：1996-10-31
申请人： Biotraces, Inc.
发明人： DRUKIER, Andrzej, K. , SAGDEJEV, Igor, R.
IPC分类号： G01T1 , G01T7
CPC分类号： G01T7/08 , G01T1/204 , G01T1/208
摘要： An ultralow background multiphoton detector device for radioisotopes (20) has a background of about one count per day and can detect one attomole of material. Two opposed gamma and X-ray photon detectors each preferably include a scintillation crystal (22) and a photomultiplier tube (26). Sandwiched between the detectors are a separator (32) and a sample holder (34) for a sample (36) labelled with a radioisotope such as I125. Each detector converts emissions from the radioisotope into electric output pulses in a base (30) which pulses are then subjected to signal processing for pulse shape analysis, discrimination of coincident from non-coincident events, and quantification of the radioisotope. Detector materials and components are selected to minimize background, and are shielded from external radiation in a composite shield (55). Detectors operating on different principes and sample holders of different configurations may be used. The device may further be constructed to resolve and provide images of two-dimensional sample arrays.

5. 发明公开

EP0721596A1 SCINTILLATION COUNTER 失效
标题翻译： SZINTILLATIONSZÄHLER
公开(公告)号：EP0721596A1
公开(公告)日：1996-07-17
申请号：EP95928690.0
申请日：1995-07-31
申请人： PACKARD INSTRUMENT COMPANY, INC.
发明人： VALENTA, Robert, J.
IPC分类号： G01T1
CPC分类号： G01T1/204
摘要： A scintillation measurement system for measuring optical events produced by scintillators (19) in response to the radioactive decay of a constituent or constituents of a sample (10) to be measured comprises a sample support for positioning a sample in a sample well (11); a bismuth germanate (BGO) scintillation crystal (19), such as Bi4Ge3O12, located adjacent the sample well; a plurality of photodetectors (16, 18) located outside the bismuth germanate crystal (19) for detecting optical events occuring in the sample well (11) or in the bismuth germanate crystal (19) and converting those optical events into electrical pulses; and a pulse analyzing system (40) for receiving the electrical pulses from the photodetectors and determining whether such pulses represent alpha, beta or gamma events. This system can be used with samples containing alpha, beta or gamma emitters, or any combination thereof.

6. 发明公开

EP0589691A3 Preventing optical crosstalk between liquid scintillation samples in translucent sample plates 失效
标题翻译：防止透明样品板液相色谱样品之间的光学晶体
公开(公告)号：EP0589691A3
公开(公告)日：1995-12-06
申请号：EP93307530.1
申请日：1993-09-23
申请人： WALLAC OY
发明人： Oikari, Timo , Järnström, Stefan , Lehtinen, Kauko , Yrjönen, Tapio
IPC分类号： G01T1/204 , G01T7/02
CPC分类号： B01L3/5085 , G01T1/204 , G01T7/00
摘要： A method of prevent optical crosstalk between different samples in a process of counting liquid scintillation samples deposited in a sample plate, the sample plate, comprising a plurality of sample wells, is described. The sample wells are provided with tubes made of material which is impermeable to, but reflective or scattering for, scintillation light generated by the samples, so that crosstalk is reduced or eliminated.
摘要翻译：描述了在沉积在样品板中的液体闪烁样品的计数过程中防止不同样品之间的光学串扰的方法，样品板包括多个样品孔。样品孔具有由对样品产生的闪烁光不透过但反射或散射的材料制成的管，从而减少或消除串扰。

7. 发明公开

EP0652923A4 LIQUID SCINTILLATION MEDIUM WITH A 1,2-DICUMYLETHANE SOLVENT. 失效
标题翻译： FLÜSSIGESSCINTILLATIONSMATERIAL MIT 1,2-DICUMYLETHANEAUFLÖSUNGSMITTEL。
公开(公告)号：EP0652923A4
公开(公告)日：1995-10-11
申请号：EP92917091
申请日：1992-08-03
申请人： MIRSKY JEFFREY
发明人： MIRSKY JEFFREY
IPC分类号： G01T1/20 , C09K11/00 , C09K11/02 , C09K11/06 , G01T1/204
CPC分类号： C09K11/025 , C09K11/06 , G01T1/204
摘要： A liquid scintillation medium contains 1,2-diphenylethane and derivatives thereof of general formula (I), where the phenyl groups are substituted with hydrogen or lower alkyls (C1-3). In an illustrative embodiment, the liquid scintillation medium comprises 1,2-dicumylethane or 1-cumyl-2-phenylethane and a fluor, the 1,2-diphenylethane compound being liquid at the temperatures of use, i.e., room temperature and below. There is also described a method of detecting beta-ray emissions using the scintillation medium of the present invention.
摘要翻译：液体闪烁介质包含通式（I）的1,2-二苯基乙烷及其衍生物，其中苯基被氢或低级烷基（C1-3）取代。在说明性实施方案中，液体闪烁介质包含1,2-二甲基乙烷或1-枯基-2-苯基乙烷和氟，1,2-二苯基乙烷化合物在使用温度下即在室温和以下为液体。还描述了使用本发明的闪烁介质检测β射线发射的方法。

8. 发明公开

EP0378897A3 Liquid scintillation counting 失效
标题翻译：液体扫描计数
公开(公告)号：EP0378897A3
公开(公告)日：1993-06-30
申请号：EP89310394.5
申请日：1989-10-11
申请人： BECKMAN INSTRUMENTS, INC.
发明人： Dodson, Charles L.
IPC分类号： G01T1/204
CPC分类号： G01T1/204
摘要： An efficiency extrapolation method is used in liquid scintillation counting for determining activity in an unknown sample. A dynamic and automatic determination of the range of the pulse height spectrum is used to permit a counting measurement in highly quenched samples, and with isotopes having low energy end points. A selected linear regression equation is extrapolated to provide the determination within a predetermined error established by a least squares condition.

9. 发明公开

EP0446254A1 METHOD FOR PERFORMING LIQUID SCINTILLATION COUNTING AND DETECTION MATERIAL 失效
标题翻译：程序与液体闪烁计数的实施以及使用的材料。
公开(公告)号：EP0446254A1
公开(公告)日：1991-09-18
申请号：EP89913274.0
申请日：1989-12-01
申请人： WALLAC OY
发明人： OIKARI, Timo , YRJÖNEN, Tapio
IPC分类号： G01T1
CPC分类号： G01T1/204 , G01T1/203
摘要： L'invention a pour objet un procédé de comptage de scintillations de liquide à l'aide d'un compteur de scintillations de liquide mesurant des échantillons radioactifs sur un support de mesure, tel qu'un filtre, une plaque ou analogue, auquel l'échantillon est associé. Selon l'invention on ajoute la matière de détection, telle qu'un scintillateur, au support de mesure avant de procéder à ladite mesure. Le procédé de l'invention se caractérise par l'addition de matière de détection, telle qu'un scintillateur, sous forme fondue dans le support de mesure, ainsi que par la prise de mesure après que la matière de détection se soit solidifiée. On ajoute sur la plaque de filtrage, par exemple un mélange de paraffine et de scintillateur. Un constituant de la matière de détection peut être un scintillateur plastique.

10. 发明公开

EP0399436A3 Improved liquid scintillation measurement with active guard shield 失效
标题翻译：改进的液体扫描测量与主动防护罩
公开(公告)号：EP0399436A3
公开(公告)日：1991-07-24
申请号：EP90109608.1
申请日：1990-05-21
申请人： Packard Instrument Company, Inc.
发明人： Valenta, Robert J. , Noakes, John E.
IPC分类号： G01T1/172
CPC分类号： G01T1/172 , G01T1/202 , G01T1/204
摘要： A low-level liquid scintillation measurement system for counting sample optical events resulting from the radioactive decay of a constituent of a sample to be measured while reducing the counting of background optical events which are optical events produced by background radiation and which create electrical pulses other than pulses representing a sample optical event. This system includes detection means located adjacent the sample for detecting optical events and for converting optical events into electrical pulses, coincidence sensing means for receiving the electrical pulses from the detection means and producing a trigger pulse when the electrical pulses from the detection means coincide with each other, burst detection means for receiving the trigger pulses from the coincidence sensing means and the electrical pulses from the detection means for determining the number of electrical pulses present in a selected interval following each of the trigger pulses, evaluation means connected to the burst detection means for determining, in response to the number of pulses detected in the selected interval, the extent to which the optical event represented by the corresponding trigger pulse should be treated as a sample optical event or a background event, and an active guard shield arrangement comprising an auxiliary scintillator optically coupled to the detection means. The shield is adapted to be excited by background radiation and to effectively increase the number of electrical pulses present in the selected interval following a trigger pulse generated as a result of the coincident pulses produced due to the background radiation. The auxiliary scintillator is a glass comprising oxides of lithium, magnesium, silicon and cerium.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式