Energy-Dispersive X-ray Fluorescence Analysis as a Rapid Method for Identifying Tephras

1983 ◽  
Vol 19 (2) ◽  
pp. 201-211 ◽  
Author(s):  
A. B. Cormie ◽  
D. E. Nelson
Keyword(s):  
Reliable Method ◽  
Fluorescence Analysis ◽  
Energy Dispersive ◽  
Bulk Glass ◽  
X Ray ◽  
Additional Tool ◽  
White River ◽  
Routine Identification ◽  
Weathering Effects ◽  
Mount St Helens

AbstractThe use of energy-dispersive X-ray fluorescence analysis (XES) for the routine identification of three tephras (Mazama, Bridge River, Mount St. Helens Yn) commonly found in archeological sites in British Columbia has been investigated. Researchers have often assumed that chemical analysis of bulk samples of glass separates would be hampered by contamination and weathering effects. Our results indicate that XES of bulk glass separates provides a very reliable method for rapidly identifying the three tephras in question, even with a very simple sample preparation. This should enable persons not skilled in geology or in tephrochronology to collect and to identify samples of these tephras. Finally, as a part of the study, similar measurements were made on the separated glass portions of these three tephras and of three others (Glacier Peak B and G, White River) from northwest North America. The results suggest that this method may provide tephrochronologists with a useful additional tool for studying tephras in other regions.

A mobile installation for energy-dispersive multi-element x-ray fluorescence analysis for application in the field

1983 ◽  
Vol 12 (4) ◽  
pp. 175-181 ◽  
Author(s):  
P. Hoffmann ◽  
K. H. Lieser ◽  
T. Hofmann ◽  
R. Sommer
Keyword(s):  
Fluorescence Analysis ◽  
Energy Dispersive ◽  
X Ray

Pre-Columbian alloys from the royal tombs of Sipán; energy dispersive X-ray fluorescence analysis with a portable equipment

2010 ◽  
Vol 68 (4-5) ◽  
pp. 525-528 ◽  
Author(s):  
R. Cesareo ◽  
C. Calza ◽  
M. Dos Anjos ◽  
R.T. Lopes ◽  
A. Bustamante ◽  
...  
Keyword(s):  
Fluorescence Analysis ◽  
Energy Dispersive ◽  
Portable Equipment ◽  
X Ray

Requirement Analysis and Preliminary Design for Energy Dispersive X-ray Fluorescence Analysis Software

1990 ◽  
Vol 34 ◽  
pp. 149-156
Author(s):  
Zhaogui Liu
Keyword(s):  
Fluorescence Analysis ◽  
Energy Dispersive ◽  
Requirement Analysis ◽  
Preliminary Design ◽  
Sequence Structure ◽  
X Ray ◽  
Qualitative And Quantitative ◽  
Complex Information ◽  
Software Packages ◽  
Quantitative Analyses

AbstractThe rapid progress of x-ray fluorescence analysis spectrometers has been closely associated with advances in computers. Due to the power of computers, it is possible to acquire the data automatically and interpret complex information accurately and quickly, so as to provide both qualitative and quantitative analyses. It is now about thirty years that computers have been applied to X-Ray Fluorescence Analysis (XRFA). Few workers have discussed the style of the various approaches, although many different software packages have been used for XRFA. Requirement analysis has been performed for Energy Dispersive (ED) XRFA, and preliminary designs are given for three types of structures: i. Sequence structure, ii. Tree structure, and iii. Net structure.

A Complete Instrumental System for Energy Dispersive Diffractometry and Fluorescence Analysis

1971 ◽  
Vol 15 ◽  
pp. 254-265 ◽  
Author(s):  
G.W. Martin ◽  
A.S. Klein
Keyword(s):  
Fluorescence Analysis ◽  
Energy Dispersive ◽  
Strip Chart Recorder ◽  
X Ray ◽  
Strip Chart ◽  
Multichannel Analyzer ◽  
Digital Format ◽  
Chart Recorder ◽  
Instrumental System ◽  
Sample Chamber

A system, has been designed and tested for rapid energy dispersive diffractometry and simultaneous fluorescence analysis. A turntable composed of the sample chamber with attached air-cooled x-ray tube allows the 2θ angle to be varied with respect to the stationary Si(Li) detector. Data for most analyses can be obtained in one minute per sample. Results are stored in the memory of a multichannel analyzer and are read out on a CRT, strip chart recorder or tabulated in digital format by a computer.

Nondestructive, Energy-Dispersive, X-Ray Fluorescence an Analysis of Actinide Stream Concentrations from Reprocessed Nuclear Fuel

1979 ◽  
Vol 23 ◽  
pp. 163-176
Author(s):  
D. C. Camp ◽  
W. D. Ruhter
Keyword(s):  
Nuclear Fuel ◽  
Nitrate Solution ◽  
Fission Products ◽  
Analytical Techniques ◽  
Fluorescence Analysis ◽  
Energy Dispersive ◽  
Light Water Reactors ◽  
Spent Fuel ◽  
X Ray ◽  
Water Reactors

In the event that nuclear fuel from light water reactors (LWR) is reprocessed to reclaim the uranium or plutonium, several analytical techniques will be used for product accountability. Generally, the isotopic content of both the plutonium and uranium in the reprocessed product will have to be accurately determined. One plan for the reprocessing of LWR spent fuel incorporates the following scheme. After separation from both the fission products and transplutonium actinides (including neptunium and americium), part of the uranium and all of the plutonium in a nitrate solution will merge together to form a coprocessed stream. This solution will be concentrated by evaporation and sent to a hold tank for accountability. Input concentrations into the hold tank could be up to 350 g U/ℓ and nearly 50 g Pu/ℓ. The variation to be expected in these concentrations is not known. The remaining uranium fraction will be further purified and sent to a separate storage tank. Its expected stream concentration will be about 60 g U/ℓ. These two relatively high actinide stream concentrations can be monitored rapidly, quantitatively, and nondestructively using the technique of energy-dispersive x-ray fluorescence analysis(XRFA).

Sign in / Sign up

Export Citation Format

Share Document