Method and apparatus for elemental analysis employing combination of neutron inelastic scattering and gamma ray scattering

Patent · Tue Feb 02 00:00:00 EST 1982

OSTI ID:5326971

Sowerby, B D

The present invention discloses a method and apparatus of elemental analysis which finds particular application in the online analyses of the specific energy (Calorific value) of coal or coke by the determination of carbon content. Analysis is achieved by a comparison of the output of neutron inelastic scatter which produces first gamma rays and of scatter of second gamma rays. Preferably 4.43 mev carbon gamma rays are used and, in addition, one or more of moisture, ash, or hydrogen content of coal or coke can be measured using 2.2 mev hydrogen capture gamma rays. The method and apparatus have the advantage of providing a compensated count rate that is essentially independent of sample compaction.

• Assignee: Australian Atomic Energy Commission, (Australia)
• Patent Number(s): US 4314155
• Application Number: TRN: 82-011985
• OSTI ID: 5326971
• Resource Relation: Patent File Date: Filed date 19 Jul 1979; Other Information: PAT-APPL-059003
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CARBON
QUANTITATIVE CHEMICAL ANALYSIS
COAL
CALORIFIC VALUE
COKE
DIGITAL COMPUTERS
GAMMA DETECTION
GAMMA RADIATION
INELASTIC SCATTERING
MEASURING INSTRUMENTS
NEUTRONS
BARYONS
CARBONACEOUS MATERIALS
CHEMICAL ANALYSIS
COMBUSTION PROPERTIES
COMPUTERS
DETECTION
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ELEMENTS
ENERGY SOURCES
FERMIONS
FOSSIL FUELS
FUELS
HADRONS
IONIZING RADIATIONS
MATERIALS
NONMETALS
NUCLEONS
RADIATION DETECTION
RADIATIONS
SCATTERING
010600* - Coal
Lignite
& Peat- Properties & Composition
400101 - Activation
Nuclear Reaction
Radiometric & Radiochemical Procedures