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Title: Field-portable high-resolution EDXRF analysis with HgI[sub 2]-detector-based instrumentation

Energy dispersive x-ray fluorescence (EDXRF) analysis is well known for its efficient use of x-ray detector technology for simultaneous multielement determination. Low-intensity excitation, such as from a radioisotope source, can thus be employed and has enabled the design of many types of truly portable EDXRF instrumentation. Portable design, however, has not been without significant compromise in analytical performance because of the limited x-ray resolving power of prior detection methods, except by the use of a cryogenically operated detector. The developments we refer to stem from the use of a comparatively new x-ray detection device fabricated from mercuric iodide (HgI[sub 2]). For this detector, only a modest degree of cooling is required to achieve an energy resolution of > 300 eV. Two field-portable instrument designs of different hand-held measurement probe configurations are available that have applications for industrial quality assurance and environmental screening.
Authors:
; ;  [1]
  1. (TN Technologies, Inc., Round Rock, TX (United States))
Publication Date:
OSTI Identifier:
6454267
Report Number(s):
CONF-920919--
Journal ID: ISSN 0003-018X; CODEN: TANSAO
Resource Type:
Conference
Resource Relation:
Journal Name: Transactions of the American Nuclear Society; (United States); Journal Volume: 65:1; Conference: 2. topical meeting on industrial radiation and radioisotope measurement applications, Raleigh, NC (United States), 8-11 Sep 1992
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; SOILS; X-RAY FLUORESCENCE ANALYSIS; X-RAY FLUORESCENCE ANALYZERS; ACCURACY; MULTI-ELEMENT ANALYSIS; PORTABLE EQUIPMENT; QUALITY ASSURANCE; RESOLUTION; CHEMICAL ANALYSIS; EQUIPMENT; NONDESTRUCTIVE ANALYSIS; X-RAY EMISSION ANALYSIS 440103* -- Radiation Instrumentation-- Nuclear Spectroscopic Instrumentation