SCINTILLATION COUNTER

device for detecting and measuring radiation by means of tiny visible flashes produced by the radiation when it strikes a sensitive substance known as a phosphor (see phosphorescence). Phosphors used in scintillation counters include zinc sulfide, sodium iodide, various liquids, and organic phosphors. The individual flashes are caused by absorption and reemission of radiation by the phosphor. They may be amplified by photomultiplier devices or amplified and converted to an electrical signal by photoemissive substances (see photoelectric effect). Scintillation counters may be used to detect the various types of radioactivity (alpha, beta, and gamma rays), cosmic rays, and various elementary particles.

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The Columbia Encyclopedia, Sixth Edition Copyright© 2004, Columbia University Press. Licensed from Lernout & Hauspie Speech Products N.V. All rights reserved.

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Questia Books and Articles on: Scintillation Counter
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books on: Scintillation Counter  - 61 results

       More book Results: 1-10 11-20 21-30 31-40 41-50 >>  
 
1.
Radioisotopes in Biology and Agriculture: Principles and Practice
Book by C. L. Comar; McGraw-Hill, 1955
Subjects: Radioisotopes In Agriculture, Radioisotopes In Biology
...Roucayrol Jean-Claude: "A Scintillation Counter for the Measurement of Weak...Hal O. Anger: The Liquid Scintillation Counting of Tritium and C14...MacIntyre William J.: "A Scintillation Counter for Measurement of...
2.
A Dictionary of Astronomy
Book by Ian Ridpath; Oxford University Press, 1997
Subjects: Astronomy--Dictionaries
...wind interplanetary scintillation , and in interstellar...matter interstellar scintillation . 2. A phenomenon...of visible light scintillations on collision with...principle of the * scintillation counter used in gamma...
3.
Encyclopaedic Dictionary of Physics: General, Nuclear, Solid State, Molecular, Chemical, Metal and Vacuum Physics, Astronomy, Geophysics, Biophysics, and Related Subjects - Vol. 2
Book by J. Thewlis, R. C. Glass, D. J. Hughes, A. R. Meetham; Pergamon Press, 1962
Subjects: Physics--Dictionaries
...The chief limitation in scintillation spectroscopic technique comes...pulse intensity when the scintillation is generated in different...use of the proportional gas counter with pulse-height discrimination...cases has advantages over the scintillation method. The proportional...
4.
International Dictionary of Physics and Electronics
Book by Walter C. Michels; Van Nostrand, 1956
...a star. SCINTILLATION. A flash of light produced in a phosphor by an ionizing event. SCINTILLATION COUNTER. See counter, scintillation. SCINTILLATION SPECTROMETER. A scintillation counter adapted to the study of energy distributions. SCLEROMETER...
5.
Experimental Biology
Book by Richard W. Van Norman; Prentice Hall, 1963
Subjects: Biology, Experimental, Biology--Research
...counts per minute c/m . The Scintillation Counter : This instrument is more...almost any shape. Whole-body counters have been constructed as hollow...other animals are placed. The scintillation counter surrounds the body and detects...
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journal articles on: Scintillation Counter  - 51 results

       More journal Results: 1-10 11-20 21-30 31-40 41-50 >>  
 
1.
Alterations in Sexually Dimorphic Biotransformation of Testosterone in Juvenile American Alligators (Alligator Mississippiensis) from Contaminated Lakes
Journal article by Mark P. Gunderson, Gerald A. Leblanc, Louis J. Guillette Jr.; Environmental Health Perspectives, Vol. 109, 2001
...was then removed and added to 5 mL of scintillation cocktail for counting using a scintillation counter. We accounted for spontaneous glucuronic...was then removed and added to 5 ml scintillation cocktail for counting using a scintillation...
2.
Disruption of Androgen Regulation in the Prostate by the Environmental Contaminant Hexachlorobenzene
Journal article by Jody L. Ralph, Marie-Claire Orgebin-Crist, Jean-Jacques Lareyre, Colleen C. Nelson; Environmental Health Perspectives, Vol. 111, 2003
...EGTA). The HAP pellet was resuspended in ethanol and transferred to a scintillation vial. Scintillation counting was completed using the Beckman LS 6500 scintillation counter (Beckman, Mississauga, Ontario, Canada), and results were expressed...
3.
Characterization of the Dust/smoke Aerosol That Settled East of the World Trade Center (WTC) in Lower Manhattan after the Collapse of the WTC 11 September 2001
Journal article by Paul Lioy, Clifford P. Weisel, James R. Millette, Steven Eisenreich, Valler Daniel, John Offenberg, Brian Buckley, Barbara Turpin, Mianhua Zhong, Mitchell D. Cohen, Colette Prophete, Ill Yang, Robert Stiles, Glen Chee, Willie Johnson, Robert Porcja, Shahnaz Alimokhtari, Robert C. Hale, Charles Weschler, Lung Chi Chen; Environmental Health Perspectives, Vol. 110, 2002
...relative efficiency) gamma counter (EG G/Ortec Instruments...primordial radionuclides. Liquid scintillation analyses were conducted for...When placed in the liquid scintillation fluid, the WTC samples are...activity by liquid scintillation counter analysis of all three samples...
4.
Genome-wide Screen for Genes with Effects on Distinct Iron Uptake Activities in Saccharomyces Cerevisiae
Journal article by Emmanuel Lesuisse, Simon A. B Knight, Maïté Courel, Renata Santos; Genetics, Vol. 169, 2005
Subjects: Deferoxamine, Enterobactin, FMN Reductase, Ferric Compounds, Genomics, Genotype & phenotype, Iron, Iron Chelating Agents, Metabolism, Plasma, Proteins, Saccharomyces cerevisiae Proteins, Siderophores, Yeast, ferric citrate iron reductase, ferrioxamine B
...Gaithersburg, MD) before scintillation counting (Wallac Trilux MicroBeta...and they were then soaked in scintillation fluid (Wallac BetaPlate Scint...counted using a 96-well liquid scintillation counter (Wallac Microbeta LS). Clustering...
5.
Molecular Mechanisms of the Diabetogenic Effects of Arsenic: Inhibition of Insulin Signaling by Arsenite and Methylarsonous Acid
Journal article by David S. Paul, Anne W. Harmon, Vicenta Devesa, David J. Thomas, Miroslav Styblo; Environmental Health Perspectives, Vol. 115, 2007
Subjects: Arsenic--Health aspects, Arsenic--Physiological aspects, Diabetes mellitus--Research, Diabetes mellitus--Risk factors, Diabetes--Research, Diabetes--Risk factors, Glucose intolerance--Research, Glucose intolerance--Risk factors
...using a Wallac 1409 liquid scintillation counter (Wallac, Turku, Finland...phosphocellulose and quantified by liquid scintillation. PDK-1 assay. PDK-1 activity...phosphocellulose and quantified by liquid scintillation. Statistical analysis. All...
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magazine articles on: Scintillation Counter  - 8 results

       More magazine Results: 1-8 >>  
 
1.
Robotics for the Small Scale
Magazine article by Jeffrey M. Perkel; The Scientist, Vol. 21, January 2007
...though its part of a much larger system, including microplate hotels, PCR machines, a microarray spotter, a scintillation counter, and a spectrophotometer, all linked by two robotic arms. The entire assembly occupies 100 square meters of...
2.
BNFL-The Integrator of Nuclear R&D in the UK
Magazine article by Richard Clegg; New Statesman, Vol. 132, February 24, 2003
Subjects: British Nuclear Fuels PLC--Contracts, British Nuclear Fuels PLC--Planning, British Nuclear Fuels PLC--Research, Nuclear industry--Contracts, Nuclear industry--Planning, Nuclear industry--Research, Research and development partnership, Universities and colleges--Contracts, Universities and colleges--Research
...which is now equipped with Raman and UV/visible/near IR spectrometers, luminescence spectroscopy, liquid scintillation counter and microcalorimetry equipment and an NMR spectrometer. The laboratory carries out thermal gravimetric analyses...
3.
Finding the Achilles' Heel of Aids
Magazine article by Michael H. Malim, Ann M. Sheehy; The Scientist, Vol. 18, June 7, 2004
...1998, we had suspected that Vifs role was to inhibit a cellular protein that naturally blocks infection. This scintillation counter printout from December 2001 shows that varying amounts of a candidate inhibitor gene we had identified, called...
4.
Army Weapons and Equipment
Magazine article; Army, Vol. 53, October 2003
Subjects: Army-US, Military aircraft, Military weapons
...processing capabilities and improves missile counter-countermeasure (CCM) capabilities...operated by a crew of two in order to counter hostile low-flying unmanned aerial vehicles...nonmaneuvering TBMs while remaining able to counter advanced cruise missiles and aircraft...
5.
Command, Control, Communications, Computers and Intelligence (C^sup 4^i) Systems
Magazine article; Army, Vol. 55, October 2005
Subjects: Army-US, Electronic warfare, Intelligence gathering, Military communications
...associated unattended ground sensors (UGS) to counter terrorist actions in lieu of manned operations...Radio Frequency Countermeasures (RFCM) counter the broad spectrum of threat search and...radio system providing antijam electronic counter-countermeasures (ECCM) UHF-AM voice...
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encyclopedia articles on: Scintillation Counter  - 2 results

 
 
1.
Scintillation Counter
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
SCINTILLATION COUNTER device for detecting and measuring...phosphorescence ). Phosphors used in scintillation counters include zinc sulfide, sodium...see photoelectric effect ). Scintillation counters may be used to detect...
2.
Particle Detector
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...radiation. In the ionization chamber and the Geiger counter , the radiation is measured by changes in an external...based on the luminescent effect of radiation is the scintillation counter . In addition to these larger instruments, there...


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