Download or read book Liquid Scintillation Alpha Spectrometry written by W. McDowell and published by CRC Press. This book was released on 2018-01-18 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alpha liquid scintillation was developed to obtain accurate analytical determinations of alpha-emitting nuclides where no other methods were sufficiently accurate. With the present emphasis on clean-up of radiation contamination, alpha liquid scintillation has become an important tool in the determination of low concentrations of alpha-emitting nuclides. This book is the first to address the subject of alpha liquid scintillation in its entirety. It also examines how alpha spectrometry by liquid scintillation can be done without interference from beta/gamma radiation. Scientists interested in the analysis of alpha-emitting nuclides for environmental monitoring, remediation clean-up, accountability, and research will find this to be a valuable book.
Download or read book Gross Alpha beta Determination by Liquid Scintillation Counting U written by J. D. Leyba and published by . This book was released on 1992 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applications of Liquid Scintillation Counting written by Donald Horrocks and published by Elsevier. This book was released on 2012-12-02 with total page 363 pages. Available in PDF, EPUB and Kindle. Book excerpt: Applications of Liquid Scintillation Counting deals with liquid scintillation counting and its applications in fields such as the biosciences, medicine, environmental and space sciences, chemistry, and physics. These applications include dual-labeled counting; Cerenkov counting; radioimmunoassay, chemiluminescence and bioluminescence; pulse shape discrimination; flow cell counting; and large-volume counters. This book is comprised of 18 chapters and begins with a historical overview of the liquid scintillation method, the first liquid scintillation counters, and early scintillator solutes. The following chapters focus on the theory of liquid scintillation counting; the components of the liquid scintillator solution; and the development of the liquid scintillation counter and multiplier phototubes. The discussion then turns to the detection and measurement of different types of particles produced by radionuclides using liquid scintillation techniques; the techniques and problems of sample preparations (homogeneous and heterogeneous); oxidation techniques; and importance and difference of several types of counting vials. The sources of quenching in counting samples and methods of monitoring and correction for variable quench within samples are also considered. Several special applications of liquid scintillation techniques are presented, including dual-labeled counting, radioimmunoassay, and flow cell counting. In conclusion, the statistical considerations involved in determining the reliability and accuracy of data obtained by nuclear counting techniques are highlighted. This monograph will serve as a reliable source of information for those who are already using or starting to use liquid scintillation counting techniques.
Download or read book Gross Alpha beta Determination by Liquid Scintillation Counting written by and published by . This book was released on 1992 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Liquid scintillation counting (LSC) is used to assay liquid samples for both gross alpha and gross beta (including tritium) activity in order to declare these samples clean.'' This method provides several advantages over traditional gross assay techniques including easy sample preparation, no sample self-absorption, short counting times, acceptable lower limits of detection (LLD's), and convenient sample disposal.
Download or read book Liquid Scintillation Counting and Organic Scintillators written by Harley Ross and published by CRC Press. This book was released on 1991-04-01 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the 1989 international conference, this book is excellent coverage of new trends and established methods in the field of liquid scintillation counting and organic scintillators. Any scientist working with scintillators will find this book valuable.
Download or read book Liquid Scintillation written by A. A. Noujaim and published by Academic Press. This book was released on 2013-10-22 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: Liquid Scintillation: Science and Technology contains the proceedings of the International Conference on Liquid Scintillation: Science and Technology held on June 14-17, 1976 at the Banff Centre in Alberta, Canada. The book presents papers on the mechanisms of the liquid scintillation process; liquid scintillation alpha counting and spectrometry and its application to bone and tissue samples; and measurement by liquid scintillator of labelled compounds (3H or 14C) dropped onto supports. The text also includes papers on the heterogeneous counting on filter support media; liquid scintillation in medical diagnosis; and the theory and application of Cerenkov counting. The radioassay of chlorine using a liquid scintillation spectrometer; some factors influencing external standardization; and the study of the sizes and distributions of colloidal water in water-emulsifier-toluene systems are also considered. The book further tackles the external standard method of quench correction; the liquid scintillation counting of novel radionuclides; and Cerenkov counting and liquid scintillation counting for the determination of fluorine. The text also looks into the absolute disintegration rate determination of beta-emitting radionuclides by the pulse height shift-extrapolation method; automatic data processing in scintillation counting; and the standardization in liquid scintillation counting. Biochemists and scientists involved in the study of chemical biodynamics will find the book invaluable.
Download or read book Alpha Particle Liquid Scintillation Counting written by Kenneth Francesco Rapuano and published by . This book was released on 1985 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Liquid Scintillation Alpha Counting and Spectrometry and Its Application to Bone and Tissue Samples written by and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Three methods for determination of alpha-emitting nuclides using liquid scintillation counting are compared, and the pertinent literature is reviewed. Data showing the application of each method to the measurement of plutonium concentration in tissue and bone samples are presented. Counting with a commercial beta-liquid scintillation counter and an aqueous-phase-accepting scintillator is shown to be accurate only in cases where the alpha activity is high (several hundred counts/min or more), only gross alpha counting is desired, and beta-gamma emitters are known to be absent from the sample or present at low levels compared with the alpha activity. Counting with the same equipment and an aqueous immiscible scintillator containing an extractant for the nuclide of interest (extractive scintillator) is shown to allow better control of alpha peak shift due to quenching, a significant reduction of beta-gamma interference, and, usually, a low background. The desirability of using a multichannel pulse-height analyzer in the above two counting methods is stressed. The use of equipment and procedures designed for alpha liquid scintillation counting is shown to allow alpha spectrometry with an energy resolution capability of 200 to 300 keV full-peak-width-at-half-peak-height and a background of 0.3 to 1.0 counts/min, or as low as 0.01 counts/min if pulse-shape discrimination methods are used. Methods for preparing animal bone and tissue samples for assay are described.
Download or read book Liquid Scintillation Alpha Spectrometry written by W. McDowell and published by CRC Press. This book was released on 2018-01-18 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alpha liquid scintillation was developed to obtain accurate analytical determinations of alpha-emitting nuclides where no other methods were sufficiently accurate. With the present emphasis on clean-up of radiation contamination, alpha liquid scintillation has become an important tool in the determination of low concentrations of alpha-emitting nuclides. This book is the first to address the subject of alpha liquid scintillation in its entirety. It also examines how alpha spectrometry by liquid scintillation can be done without interference from beta/gamma radiation. Scientists interested in the analysis of alpha-emitting nuclides for environmental monitoring, remediation clean-up, accountability, and research will find this to be a valuable book.
Download or read book Liquid Scintillation Alpha Spectrometry written by Mr. W. Jack McDowell and published by CRC Press. This book was released on 1993-10-13 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alpha liquid scintillation was developed to obtain accurate analytical determinations of alpha-emitting nuclides where no other methods were sufficiently accurate. With the present emphasis on clean-up of radiation contamination, alpha liquid scintillation has become an important tool in the determination of low concentrations of alpha-emitting nuclides. This book is the first to address the subject of alpha liquid scintillation in its entirety. It also examines how alpha spectrometry by liquid scintillation can be done without interference from beta/gamma radiation. Scientists interested in the analysis of alpha-emitting nuclides for environmental monitoring, remediation clean-up, accountability, and research will find this to be a valuable book.
Download or read book Alpha Liquid Scintillation Counting written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Beta liquid scintillation counting has been used for about 30 years, and its effectiveness for alpha particles has been known for almost that long; however, the technique has not been widely applied to alpha particle detection because of poor energy resolution, high background, and variable interference from beta and gamma radiation. Beginning with the work of Horrocks in the early 1960s, improvements in energy resolution and background rejection have been made. Further developments at Oak Ridge National Laboratory over the past 10 to 12 years have resulted in improved methods of sample preparation (using liquid-liquid extraction methods to isolate the sample and introduce it into the scintillator) and better instrumentation, including electronic rejection of beta and gamma pulses. Energy resolutions of 200- to 300-keV FWHM and background counts of 0.01 cpm are now routine. Alpha liquid scintillation spectrometry is now suitable for a wide range of applications, from the accurate quantitative determination of relatively large amounts of known nuclides in laboratory-generated samples to the detection and identification of very small, subpicocurie amounts of alpha emitters in environmental-type samples. Suitable nuclide separation procedures, sample preparation methods, and instrument configurations are outlined for a variety of analyses.
Download or read book Alpha Counting and Spectrometry Using Liquid Scintillation Methods written by W. J. McDowell and published by . This book was released on 199? with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Calibration of a Liquid Scintillation Counter for Alpha Beta and Cerenkov Counting written by and published by . This book was released on 1996 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Calibration data are presented for 25 radionuclides that were individually measured in a Packard Tri-Carb 2250CA liquid scintillation (LS) counter by both conventional and Cerenkov detection techniques. The relationships and regression data between the quench indicating parameters and the LS counting efficiencies were determined using microliter amounts of tracer added to low 4°K borosilicate glass vials containing 15 mL of Insta-Gel XF scintillation cocktail. Using 4°K, the detection efficiencies were linear over a three order of magnitude range (10 - 10,000 mBq) in beta activity for both LS and Cerenkov counting. The Cerenkov counting efficiency (CCE) increased linearly (42% per MeV) from 0.30 to 2.0 MeV, whereas the LS efficiency was>90% for betas with energy in excess of 0.30 MeV. The CCE was 20 - 50% less than the LS counting efficiency for beta particles with maximum energies in excess of 1 MeV. Based on replicate background measurements, the lower limit of detection (LLD) for a 1-h count at the 95% confidence level, using water as a solvent, was 0.024 counts sec-−1 and 0.028 counts sec-1 for plastic and glass vials, respectively. The LLD for a 1-h-count ranged from 46 to 56 mBq (2.8 - 3.4 dpm) for both Cerenkov and conventional LS counting. This assumes: (1) a 100% counting efficiency, (2) a 50% yield of the nuclide of interest, (3) a 1-h measurement time using low background plastic vials, and (4) a 0-50 keV region of interest. The LLD is reduced an order of magnitude when the yield recovery exceeds 90% and a lower background region is used (i.e., 100 - 500 keV alpha region of interest). Examples and applications of both Cerenkov and LS counting techniques are given in the text and appendices.
Download or read book Liquid Scintillation Counting Techniques for the Determination of Some Alpha Emitting Actinides written by N. N. Mirashi and published by . This book was released on 2000 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Liquid Scintillation Counting Techniques for the Detemination of Some Alpha Emitting Actinides written by N. N. Mirashi and published by . This book was released on 2000 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Radioactivity Analysis written by Michael F. L'Annunziata and published by Elsevier. This book was released on 2012-12-02 with total page 810 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Radioactivity Analysis is written by experts in the measurement of radioactivity. The book describes the broad scope of analytical methods available and instructs the reader on how to select the proper technique. It is intended as a practical manual for research which requires the accurate measurement of radioactivity at all levels, from the low levels encountered in the environment to the high levels measured in radioisotope research. This book contains sample preparation procedures, recommendations on steps to follow, necessary calculations, computer controlled analysis, and high sample throughput techniques. Each chapter includes practical techniques for application to nuclear safety, nuclear safeguards, environmental analysis, weapons disarmament, and assays required for research in biomedicine and agriculture. The fundamentals of radioactivity properties, radionuclide decay, and methods of detection are included to provide the basis for a thorough understanding of the analytical procedures described in the book. Therefore, the Handbook can also be used as a teaching text. Includes sample preparation techniques for matrices such as soil, air, plant, water, animal tissue, and surface swipes Provides procedures and guidelines for the analysis of commonly encountered na
Download or read book Alpha Counting and Spectometry Using Liquid Scintillation Methods written by W.J. Mc Dowell and published by . This book was released on 1986 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
