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Author : K. W. Macmurdo
Publisher :
ISBN 13 :
Total Pages : 140 pages
Book Rating : 4.:/5 (636 download)
Download or read book Automated Absolute Activation Analysis with Californium-252 Sources written by K. W. Macmurdo and published by . This book was released on 1978 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Automated Absolute Activation Analysis with Californium-252 Sources written by and published by . This book was released on 197? with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Data Reduction in the 100 Mg $sup 252$Cf Activation Analysis Facility at the Savannah River Laboratory written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The automated absolute activation analysis technique developed at the Savannah River Laboratory is based on the ability to predict neutron capture reaction rates from tabulated cross sections and neutron spectra accurately calculated for the 100-mg $sup 252$Cf source. A series of computer programs comprises the data reduction system which: (1) reduces the gamma-ray spectra to lists of photopeak energies, areas, and statistical errors for all significant photopeaks, (2) assigns each gamma ray to the appropriate activation product by comparing experimental to tabulated gamma-ray energy, (3) converts each photopeak area into an elemental concentration using the experimental timing data, calculated reaction rates, detector efficiency, and activation product spectroscopic data in the absolute activation master equation. The data reduction system requires about one second of IBM 360-195 CPU time for the conversion of each 4096 channel spectrum into a qualitative and quantitative list of elemental composition. The accuracy of the algorithm is better than +- 15 percent for most elements. (auth).
Download or read book In Situ X-ray Fluorescence and Californium-252 Neutron Activation Analysis for Marine and Terrestrial Mineral Exploration written by and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Instrumentation has been designed for in situ analysis of marine and terrestrial minerals using the techniques of x-ray fluorescence and neutron activation analysis. The energy-dispersive x-ray fluorescence analyzer allows more than 20 elements to be quantitatively measured at the 10 ppM level in water depths to 300 m. The analyzer consists of a solid cryogen-cooled Si(Li) detector, a 50 mCi /sup 109/Cd or /sup 57/Co excitation source, and an analyzer-computer system for data storage and manipulation. The neutron activation analysis, which is designed to measure up to 30 elements at parts per hundred to ppM levels, utilizes the man-made element /sup 252/Cf as its neutron activation source. The resulting radioelements which emit characteristic gamma radiation are then analyzed in situ during 2- to 200-s counting intervals with Ge(Li) or NaI(T1) detector systems. An extension of this latter technique, which uses a /sup 252/Cf-/sup 235/U fueled subcritical multiplier, is also being studied. The subcritical facility allows the neutrons from the /sup 252/Cf source to be multiplied, thus providing greater neutron flux. Details of these in situ analysis systems, actual in situ spectra, and recorded data are discussed with respect to the detection of minerals at their varying concentration levels. The system response of each illustrates its usefulness for various rapid environmental mineral exploration studies. These techniques can be utilized on terrestrial surfaces and marine or fresh water sediments. 5 figures, 2 tables.
Download or read book 100 Mg $sup 251$Cf Activation Analysis Facility at the Savannah River Laboratory written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The $sup 252$Cf Activation Analysis Facility at the Savannah River Laboratory (SRL) is used routinely for multielement analyses of a wide variety of solid and liquid samples (e.g., metal alloys, fly ash and other airborne particles, rocks, and aqueous and nonaqueous solutions). An automated absolute activation analysis technique, developed to use neutron transport codes to calculate multienergy group neutron spectra and fluxes, converts counting data directly into elemental concentrations expressed in parts per million. The facility contains four sources of $sup 252$Cf totaling slightly over 100 mg. A pneumatic ''rabbit'' system permits automatic irradiation/decay/counting regimes to be performed unattended on up to 100 samples. Detection sensitivities of less than or equal to 400 ppb natural uranium and less than or equal to 0.5 nCi/g for $sup 239$Pu are observed. Detection limits for over 65 elements have been determined. Over 40 elements are detectable at the one part per million level or less. Overall accuracies of +- 10 percent are observed for most elements. (auth).
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ISBN 13 :
Total Pages : 706 pages
Book Rating : 4.:/5 (3 download)
Download or read book Energy Research Abstracts written by and published by . This book was released on 1984 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : U.S. Atomic Energy Commission
Publisher :
ISBN 13 :
Total Pages : 652 pages
Book Rating : 4.3/5 (91 download)
Download or read book Californium-252 Progress written by U.S. Atomic Energy Commission and published by . This book was released on 1972 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 912 pages
Book Rating : 4.0/5 ( download)
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976-04 with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 1134 pages
Book Rating : 4.:/5 (31 download)
Download or read book Energy Research Abstracts written by and published by . This book was released on 1979 with total page 1134 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes all works deriving from DOE, other related government-sponsored information and foreign nonnuclear information.
Author : Smithsonian Science Information Exchange
Publisher :
ISBN 13 :
Total Pages : 908 pages
Book Rating : 4.3/5 (129 download)
Download or read book Environmental Protection Research Catalog written by Smithsonian Science Information Exchange and published by . This book was released on 1972 with total page 908 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 228 pages
Book Rating : 4.3/5 (91 download)
Download or read book Topical Meeting on Industrial Radiation and Radioisotope Measurements and Applications written by and published by . This book was released on 1996 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Charles E. Stuber
Publisher :
ISBN 13 :
Total Pages : 152 pages
Book Rating : 4.3/5 (91 download)
Download or read book Transplutonium Elements written by Charles E. Stuber and published by . This book was released on 1977 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 120 pages
Book Rating : 4.:/5 (31 download)
Download or read book A Directory of Computer Software Applications written by and published by . This book was released on 1978 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. National Technical Information Service
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ISBN 13 :
Total Pages : 120 pages
Book Rating : 4.3/5 (91 download)
Download or read book A Directory of Computer Software Applications written by United States. National Technical Information Service and published by . This book was released on 1978 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 708 pages
Book Rating : 4.0/5 ( download)
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1973 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 1388 pages
Book Rating : 4.F/5 ( download)
Download or read book INIS Atomindeks written by and published by . This book was released on 1979 with total page 1388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 512 pages
Book Rating : 4.:/5 (319 download)
Download or read book INIS Atomindex written by and published by . This book was released on 1975 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:
