Investigation of energy-dispersive X-ray fluorescence analysis for on-line aluminum thickness/composition measurement
Conference
·
· Transactions of the American Nuclear Society; (United States)
OSTI ID:5916540
While considering the use of continuous on-line radiation dual-gauge methods for measuring aluminum sheet thickness to minimize the effect of composition variations, it occurred to the authors that another possible approach is to use energy-dispersive X-ray fluorescence (EDXRF) analysis in conjunction with a single radiation gauge to solve the same problem. The EDXRF analyzer would be used to provide elemental composition on a continuous (or semicontinuous) basis, and this information would, in turn, be used to update or otherwise correct the thickness calibration of the radiation thickness gauge. This approach requires that one have a calibration model of the radiation thickness gauge that properly includes the aluminum elemental composition and an approach for the EDXRF analysis that properly includes the aluminum sheet thickness. Such a calibration model has been derived and tested for both photon (X- and gamma-ray) radiation transmission and backscatter thickness gauges, and suitable models for beta-particle transmission and backscatter thickness gauges are being developed. An approach called the Monte Carlo-Library Least-Squares (MCLLS) principle has been developed for EDXRF analysis that inherently incorporates sheet thickness correctly into the analysis procedure.
- OSTI ID:
- 5916540
- Report Number(s):
- CONF-910603--
- Conference Information:
- Journal Name: Transactions of the American Nuclear Society; (United States) Journal Volume: 63
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
440101* -- Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ALUMINIUM
CALIBRATION
CHEMICAL ANALYSIS
CHEMICAL COMPOSITION
ELEMENTS
FABRICATION
ITERATIVE METHODS
LEAST SQUARE FIT
MATERIALS WORKING
MAXIMUM-LIKELIHOOD FIT
MEASURING INSTRUMENTS
METALS
MONTE CARLO METHOD
NONDESTRUCTIVE ANALYSIS
NUMERICAL SOLUTION
ON-LINE MEASUREMENT SYSTEMS
ON-LINE SYSTEMS
PERFORMANCE
RADIOMETRIC GAGES
ROLLING
THICKNESS GAGES
X-RAY EMISSION ANALYSIS
X-RAY FLUORESCENCE ANALYSIS
360101 -- Metals & Alloys-- Preparation & Fabrication
440101* -- Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ALUMINIUM
CALIBRATION
CHEMICAL ANALYSIS
CHEMICAL COMPOSITION
ELEMENTS
FABRICATION
ITERATIVE METHODS
LEAST SQUARE FIT
MATERIALS WORKING
MAXIMUM-LIKELIHOOD FIT
MEASURING INSTRUMENTS
METALS
MONTE CARLO METHOD
NONDESTRUCTIVE ANALYSIS
NUMERICAL SOLUTION
ON-LINE MEASUREMENT SYSTEMS
ON-LINE SYSTEMS
PERFORMANCE
RADIOMETRIC GAGES
ROLLING
THICKNESS GAGES
X-RAY EMISSION ANALYSIS
X-RAY FLUORESCENCE ANALYSIS