专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

71. 发明授权

US4651006A Reduced background scintillation counting 失效
标题翻译：减少背景闪烁计数
公开(公告)号：US4651006A
公开(公告)日：1987-03-17
申请号：US721266
申请日：1985-04-08
申请人： Robert J. Valenta
发明人： Robert J. Valenta
IPC分类号： G01T1/172 , G01T1/204 , G01T1/178
CPC分类号： G01T1/204 , G01T1/172
摘要： A method and apparatus for separating background events from valid sample events in a liquid scintillation counter are disclosed. Upon the detection of a coincident event pulse the number of pulses detected during a short time interval immediately thereafter together with the energy level of the event pulse is utilized to determine the probability that the event pulse is a valid sample pulse as opposed to an invalid background pulse. The total count rate is determined by summing pulses over the appropriate energy range where each pulse is counted as one multiplied by the above probability that the pulse is a valid sample pulse.
摘要翻译：公开了一种用于从液体闪烁计数器中分离背景事件与有效样品事件的方法和装置。在检测到一致的事件脉冲之后，紧接其后的短时间间隔内检测到的脉冲数与事件脉冲的能量水平一起被用于确定事件脉冲是有效采样脉冲而不是无效背景的概率脉冲。总计数速率由适当能量范围内的加法脉冲确定，其中每个脉冲被计数为乘以脉冲是有效采样脉冲的上述概率。

72. 发明授权

US4444677A General purpose liquid scintillation composition 失效
标题翻译：通用液体闪烁组合物
公开(公告)号：US4444677A
公开(公告)日：1984-04-24
申请号：US444967
申请日：1982-11-29
申请人： Harold Edelstein , Daniel Koetters
发明人： Harold Edelstein , Daniel Koetters
IPC分类号： G01T1/204 , G01T1/167
CPC分类号： G01T1/2042
摘要： A general purpose scintillation cocktail comprises an aromatic liquid capable of capturing energy from radiation, at least one fluor compound, and a nonionic liquid surfactant comprised of polyethoxylated polyoxyethylene in which the weight percent of the polyoxyethylene in the molecule exceeds about 40 and in which the molecular weight of the polyoxypropylene portion of the molecule exceeds about 1450.
摘要翻译：通用闪烁混合物包括能够从辐射中捕获能量的芳族液体，至少一种氟化合物和由聚乙氧基化聚氧乙烯组成的非离子液体表面活性剂，其中分子中聚氧乙烯的重量百分比超过约40，并且其中分子分子的聚氧丙烯部分的重量超过约1450。

73. 发明授权

US4361765A Ternary liquid scintillator for optical fiber applications 失效
标题翻译：用于光纤应用的三元液体闪烁体
公开(公告)号：US4361765A
公开(公告)日：1982-11-30
申请号：US269234
申请日：1981-06-01
申请人： Larry A. Franks , Stephen S. Lutz
发明人： Larry A. Franks , Stephen S. Lutz
IPC分类号： G01J1/58 , G01T1/204 , G01J1/16 , C09K11/06
CPC分类号： G01J1/58 , G01T1/2042
摘要： A multicomponent liquid scintillator solution for use as a radiation-to-light converter in conjunction with a fiber optic transmission system. The scintillator includes a quantity of 5-amino-9-diethylaminobenz (a) phenoxazonium nitrate (Nile Blue Nitrate) as a solute in a fluor solvent such as benzyl alcohol. The use of PPD as an additional solute is also disclosed. The system is controllable by addition of a suitable quenching agent, such as phenol.
摘要翻译：一种多组分液体闪烁体解决方案，与光纤传输系统一起用作辐射到光转换器。闪烁体包括在诸如苄醇的氟溶剂中作为溶质的5-氨基-9-二乙基氨基苯（a）硝酸苯并氮氮鎓（Nile Blue Nitrate）。还公开了使用PPD作为附加溶质。该系统可通过加入合适的淬灭剂如苯酚来控制。

74. 发明授权

US4075480A Quench determination in liquid scintillation counting systems 失效
标题翻译：液相色谱计数系统中的液相色谱法测定
公开(公告)号：US4075480A
公开(公告)日：1978-02-21
申请号：US693673
申请日：1976-06-07
申请人： Donald L. Horrocks
发明人： Donald L. Horrocks
IPC分类号： G01T1/204 , G01T1/00
CPC分类号： G01T1/2045
摘要： Method and apparatus for measuring the degree of quench in a liquid scintillation sample by irradiating the sample with a standard source, such as a cesium-137 gamma source, to produce a Compton scattered electron distribution exhibiting a Compton edge configuration as the leading edge thereof. For increasing the quench levels in the sample, the Compton edge shifts to lower pulse height values and the extent of this shift is indicative of the degree of quench. To measure the degree of quench, a unique point on the Compton edge, namely the point at which the second derivative of the edge is zero (i.e. the inflection point), is measured for the quenched sample and the pulse height value corresponding to the inflection point is determined. The pulse height value is compared with the pulse height value determined for a calibration standard in a similar manner, the difference in pulse height values indicating the degree of quench.

75. 发明授权

US4060728A Method of measuring the disintegration rate of beta-emitting radionuclide in a liquid sample 失效
标题翻译：测量液体样品中β发射放射性核素的崩解速率的方法
公开(公告)号：US4060728A
公开(公告)日：1977-11-29
申请号：US696003
申请日：1976-06-14
申请人： Donald L. Horrocks
发明人： Donald L. Horrocks
IPC分类号： G01T1/204 , G01T1/00
CPC分类号： G01T1/2045
摘要： A method of measuring the disintegration rate of a beta-emitting radionuclide in a liquid sample by counting at least two differently quenched versions of the sample. In each counting operation the sample is counted in the presence of and in the absence of a standard radioactive source. A pulse height (PH) corresponding to a unique point on the pulse height spectrum generated in the presence of the standard is determined. A zero threshold sample count rate (CPM) is derived by counting the sample once in a counting window having a zero threshold lower limit. Normalized values of the measured pulse heights (PH) are developed and correlated with the corresponding pulse counts (CPM) to determine the pulse count for a normalized pulse height value of zero and hence the sample disintegration rate.
摘要翻译：通过对样品的至少两种不同淬火形式进行计数来测量液体样品中β-发射放射性核素的崩解速率的方法。在每个计数操作中，样品在存在标准放射源的情况下计数。确定对应于在存在标准时产生的脉冲高度谱上的唯一点的脉冲高度（PH）。通过在具有零阈值下限的计数窗口中对样本进行一次计数，得出零阈值采样计数速率（CPM）。测量的脉冲高度（PH）的归一化值被开发并与相应的脉冲计数（CPM）相关联，以确定归一化脉冲高度值为零的脉冲计数，并因此确定样品分解速率。

76. 发明授权

US4017738A Scintillator 失效
标题翻译：闪烁体
公开(公告)号：US4017738A
公开(公告)日：1977-04-12
申请号：US587542
申请日：1975-06-17
申请人： Mark Hyman, Jr.
发明人： Mark Hyman, Jr.
IPC分类号： C09K11/06 , G01T1/203 , G01T1/204 , G01J1/58
CPC分类号： G01T1/203 , C09K11/06 , G01T1/2042
摘要： A new scintillator, di-m-methylphenyl-1,3,4-oxadiazole, or 2,5-di-m-tolyl-1,3,4-oxadiazole, is prepared by reacting m-toluoyl chloride with hydrazine to form di-m-toluoyl hydrazine which, in turn, is reacted with thionyl chloride to form the desired product. The scintillator, di-m-methylphenyloxadiazole compares favorably with present commercial products, being equal to or better than diphenyloxazole in most important respects and significantly superior in scintillation pulse height and in stability. It can be produced at a fraction of the cost of today's most widely used product.
摘要翻译：通过使间甲苯甲酰氯与肼反应制备新的闪烁体，二 - 间甲基苯基-1,3,4-恶二唑或2,5-二间甲苯基-1,3,4-恶二唑，形成二 - 甲苯酰肼，其又与亚硫酰氯反应以形成所需产物。闪烁体，二甲基苯基恶二唑与现有的商业产品相比，在最重要的方面等于或优于二苯基恶唑，并且在闪烁脉冲高度和稳定性方面显着优异。它可以以当今最广泛使用的产品的成本的一小部分来生产。

77. 发明授权

US4005292A Mass counting of radioactivity samples 失效
标题翻译：放射性样品的质量计数
公开(公告)号：US4005292A
公开(公告)日：1977-01-25
申请号：US576343
申请日：1975-05-12
申请人： Donald L. Oesterlin , Raymond F. Obrycki
发明人： Donald L. Oesterlin , Raymond F. Obrycki
IPC分类号： G01T1/164 , G01T1/204 , G01T7/08 , G01T1/00 , G01T1/20
CPC分类号： G01T1/1642 , G01T1/204 , G01T7/08
摘要： A method and apparatus for concurrently counting a plurality of radioactive samples. The position sensitive circuitry of a scintillation camera is employed to sort electrical pulses resulting from scintillations according to the geometrical locations of scintillations causing those pulses. A scintillation means, in the form of a scintillating crystal material or a liquid scintillator, is positioned proximate to an array of radioactive samples. Improvement in the accuracy of pulse classification may be obtained by employing collimating means. If a plurality of scintillation crystals are employed to measure the iodine-125 content of samples, a method and means are provided for correcting for variations in crystal light transmission properties, sample volume, and sample container radiation absorption.
摘要翻译：一种用于同时计数多个放射性样品的方法和装置。闪烁照相机的位置敏感电路用于根据引起这些脉冲的闪烁的几何位置来对由闪烁产生的电脉冲进行分类。以闪烁晶体材料或液体闪烁体的形式的闪烁装置位于放射性样品阵列附近。可以通过采用准直装置来获得脉冲分类精度的提高。如果使用多个闪烁晶体来测量样品的碘-125含量，则提供了用于校正晶体透光性，样品体积和样品容器辐射吸收变化的方法和装置。

78. 发明授权

US4002908A Program selection, particularly for liquid scintillation spectrometers 失效
标题翻译：程序选择，特别是液体闪烁光谱仪
公开(公告)号：US4002908A
公开(公告)日：1977-01-11
申请号：US593563
申请日：1975-07-07
申请人： Yves Coutarel
发明人： Yves Coutarel
IPC分类号： G01T1/204 , G05B19/12 , G06K7/10 , G06K19/04 , G01T1/00
CPC分类号： G06K7/10861 , G01T1/204 , G05B19/124 , G05B19/128 , G06K19/04
摘要： A sample radioactivity measuring system has a conveyor for moving a plurality of sample receiving locations in succession to a working position. A device for selecting the measuring program to be executed on the samples comprises a plurality of marker plugs each adapted to be removably located in the conveyor for movement by the conveyor. Each marker is provided with a different address code. Each address code corresponds to a location in a card reader. Cards insertable into the addressed locations each carry one of the programs and the program read from the card at the addressed location is used for processing the associated samples.
摘要翻译：样品放射性测量系统具有用于将多个样品接收位置连续移动到工作位置的输送机。用于选择要在样本上执行的测量程序的装置包括多个标记插头，每个标记插头适于可拆卸地位于传送器中，用于由传送器移动。每个标记都提供不同的地址代码。每个地址码对应于读卡器中的位置。可插入到寻址位置的卡片每个都携带一个程序，并且在所寻址的位置从卡读取的程序用于处理相关联的采样。

79. 再颁专利

USRE28738E Quench correction in liquid scintillation counting 失效
标题翻译：液体闪烁计数中的淬火校正
公开(公告)号：USRE28738E
公开(公告)日：1976-03-16
申请号：US498271
申请日：1974-08-19
申请人： Gerardus Huibrecht Kulberg , Roedolf Hendrik Deinert
发明人： Gerardus Huibrecht Kulberg , Roedolf Hendrik Deinert
IPC分类号： G01T1/204
CPC分类号： G01T1/2045
摘要： A means for determining counting efficiency in a liquid scintillation system. Pulse amplitudes are accumulated as are the number of pulses contributing thereto. The accumulated pulse amplitude sum is divided by the accumulated number of pulses to produce an average pulse amplitude for the pulses measured. The average pulse amplitude may be correlated to average detection efficiency by an ascertainable function. Through average efficiency of detection the actual rate of radioactive disintegrations may be computed from the count rate measured.

80. 发明授权

US3928227A Liquid scintillation, counting and compositions 失效
标题翻译：液体闪烁，计数和组成
公开(公告)号：US3928227A
公开(公告)日：1975-12-23
申请号：US33406873
申请日：1973-02-20
申请人： SENTOL ASSOCIATES
发明人： SENA EDWIN A , TOLBERT BERT M , SUTULA CHESTER L
IPC分类号： C09K11/06 , G01T1/204 , F21K2/02
CPC分类号： G01T1/2042 , C09K11/06
摘要： The emissions of radioactive isotopes in both aqueous and organic samples can be measured by liquid scintillation counting in micellar systems. The micellar systems are made up of scintillation solvent, scintillation solute and a mixture of surfactants, preferably at least one of which is relatively oilsoluble water-insoluble and another which is relatively watersoluble oil-insoluble.
摘要翻译：含水和有机样品中放射性同位素的排放可以通过胶束系统中的液体闪烁计数来测量。胶束系统由闪烁溶剂，闪烁溶质和表面活性剂的混合物组成，优选其中至少一种相对油溶于水不溶性，另一种是相对水溶性的油不溶性的。

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