Title:
METHOD TO MEASURE HYDROGEN-BEARING CONSTITUENT IN A MATERIAL USING NEUTRON SPECTROSCOPY
Document Type and Number:
WIPO Patent Application WO2002021112
Kind Code:
A3
Abstract:
A non-destructive method for quantifying the hydrogen content or a hydrogen-bearing constituent in a material is disclosed. The method is based on the principle of moderating neutron spectroscopy which is particularly suited for analyzing materials containing the high scattering/capture cross-section element of hydrogen. The method comprises the steps of exposing a neutron moderator to a beam of radiation comprising neutrons and measuring thermal neutron intensities at a plurality of locations in the moderator. These measured intensities reflect the energy distribution of the beam of radiation incident upon the moderator. Thus, by measuring these intensities with the material present, and comparing these intensities to a model, to those of a composition standard(s), or combinations thereof, the hydrogen content of the material is quantified. Furthermore, the hydrogen-bearing constituent of the material is quantified by knowing or estimating the chemical or molecular structure of the material.
Inventors:
CRAIG RICHARD A
BLISS MARY
BLISS MARY
Application Number:
PCT/US2001/027131
Publication Date:
January 16, 2003
Filing Date:
August 31, 2001
Export Citation:
Assignee:
BATTELLE MEMORIAL INSTITUTE (US)
International Classes:
G01N23/00; G01N23/204; (IPC1-7): G01T3/00; G01N23/09; G01T3/06
Domestic Patent References:
| WO1998025160A1 | 1998-06-11 |
Foreign References:
| US5200626A | 1993-04-06 | |||
| US4884288A | 1989-11-28 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 19 5 June 2001 (2001-06-05)
DATABASE WPI Section EI Week 199836, Derwent World Patents Index; Class S03, AN 1998-426270, XP002213488
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 19 5 June 2001 (2001-06-05)
BLISS M ET AL: "SPECTROSCOPY WITHOUT A SPECTROMETER", PROCEEDINGS OF THE SPIE, SPIE, BELLINGHAM, VA, US, vol. 3180, 6 May 1997 (1997-05-06), pages 58 - 62, XP001036673
BLISS M ET AL: "GLASS-FIBER-BASED NEUTRON DETECTORS FOR HIGH- AND LOW-FLUX ENVIRONMENTS", PROCEEDINGS OF THE SPIE, SPIE, BELLINGHAM, VA, US, vol. 2551, 1995, pages 108 - 117, XP001036674
BRAMBLETT R L ET AL: "A NEW TYPE OF NEUTRON SPECTROMETER", NUCLEAR INSTRUMENTS AND METHODS, NORTH-HOLLAND PUBLISHING COMPANY. AMSTERDAM, NL, vol. 9, October 1960 (1960-10-01), pages 1 - 12, XP001031938
DATABASE WPI Section EI Week 199836, Derwent World Patents Index; Class S03, AN 1998-426270, XP002213488
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 19 5 June 2001 (2001-06-05)
BLISS M ET AL: "SPECTROSCOPY WITHOUT A SPECTROMETER", PROCEEDINGS OF THE SPIE, SPIE, BELLINGHAM, VA, US, vol. 3180, 6 May 1997 (1997-05-06), pages 58 - 62, XP001036673
BLISS M ET AL: "GLASS-FIBER-BASED NEUTRON DETECTORS FOR HIGH- AND LOW-FLUX ENVIRONMENTS", PROCEEDINGS OF THE SPIE, SPIE, BELLINGHAM, VA, US, vol. 2551, 1995, pages 108 - 117, XP001036674
BRAMBLETT R L ET AL: "A NEW TYPE OF NEUTRON SPECTROMETER", NUCLEAR INSTRUMENTS AND METHODS, NORTH-HOLLAND PUBLISHING COMPANY. AMSTERDAM, NL, vol. 9, October 1960 (1960-10-01), pages 1 - 12, XP001031938
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