Matrix effects in compositional analysis of bulk materials by PGNAA (prompt gamma/neutron activation analysis). Final report

Technical Report · Wed Aug 01 00:00:00 EDT 1984

OSTI ID:6421922

Rogers, V C; Sandquist, G M; Merrell, G B; Gozani, T

This feasibility study has identified and evaluated the influence of important matrix effects which arise in the commercial application of prompt gamma/neutron activation analysis (PGNAA) methods to bulk-coal analysis as follows: neutron moderation and absorption changes; gamma-ray attenuation in the sample; sample density and volume changes. The neutron-induced capture gamma spectra were found to vary in a similar, predictable manner for all neutron absorbers found in coal such as hydrogen, boron, nitrogen, chlorine, and sulfur. Three different models have been proposed from this study to analyze coal by PGNAA methods and account for the significant matrix effects arising from hydrogen variation and other system perturbations.

• Research Organization: Rogers and Associates Engineering Corp., Salt Lake City, UT (USA)
• OSTI ID: 6421922
• Report Number(s): PB-87-160479/XAB; RAE-52-1
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
01 COAL, LIGNITE, AND PEAT
COAL
ACTIVATION ANALYSIS
ATTENUATION
CAPTURE
GAMMA RADIATION
GAMMA SPECTRA
NEUTRON REACTIONS
PROMPT NEUTRONS
BARYON REACTIONS
BARYONS
CARBONACEOUS MATERIALS
CHEMICAL ANALYSIS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ENERGY SOURCES
FERMIONS
FISSION NEUTRONS
FOSSIL FUELS
FUELS
HADRON REACTIONS
HADRONS
IONIZING RADIATIONS
MATERIALS
NEUTRONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEONS
RADIATIONS
SPECTRA
400101* - Activation
Nuclear Reaction
Radiometric & Radiochemical Procedures
010600 - Coal
Lignite
& Peat- Properties & Composition