Published March 23, 1990 | Version v1
Patent Open

Radiation method for determining hydrogen concentration in substance samples

Creators

Description

A method for determining hydrogen concentration in substance samples, consisting in irradiation of a sample by neutrons through a shielding-moderating unit and neutron-absorbing screen and measurements of the neutron flux by a detector, is proposed. To improve the accuracy for samples having different chemical compositions in a wide hydrogen concentration range, the dependence of detector readings on the absorbing screen - neutron source distance at different lower energy thresholds of neutron detection is preliminarily taken, and moving the source inside the shielding - moderating unit, the source position, at which the detector reading difference for two different thresholds is maximum, and the measurements are carried out at the given source position and selected thresholds. The diagram and operating principle of the device are considered. 3 figs

Availability note (English)

MF available from INIS under the Report Number.

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Additional details

Additional titles

Original title (Russian)
Радиационный способ определения концентрации водорода в пробах вещества

Publishing Information

Imprint Pagination
4 p.
IPC:
Int. Cl. G01N 23/02.
IPC
Int. Cl. G01N 23/02.
Patent number
SU patent document 1345804/A/

INIS

Country of Publication
USSR
Country of Input or Organization
USSR
INIS RN
22041389
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; S07: ISOTOPES AND RADIATION SOURCES;
Descriptors DEI
ACCURACY; CALIFORNIUM 252; CORRECTIONS; HUMIDITY; HYDROGEN; KEV RANGE; MEV RANGE 01-10; MOISTURE GAGES; NEUTRON SOURCES; NEUTRONS; QUANTITATIVE CHEMICAL ANALYSIS; QUANTITY RATIO; RADIATION ABSORPTION ANALYSIS; RADIATION ATTENUATION TESTING; RADIOMETRIC GAGES
Descriptors DEC
ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; BARYONS; CALIFORNIUM ISOTOPES; CHEMICAL ANALYSIS; ELEMENTARY PARTICLES; ELEMENTS; ENERGY RANGE; EVEN-EVEN NUCLEI; FERMIONS; HADRONS; HEAVY NUCLEI; ISOTOPES; MATERIALS TESTING; MEASURING INSTRUMENTS; MEV RANGE; NONDESTRUCTIVE ANALYSIS; NONDESTRUCTIVE TESTING; NONMETALS; NUCLEI; NUCLEONS; PARTICLE SOURCES; RADIATION SOURCES; RADIOISOTOPES; SPONTANEOUS FISSION RADIOISOTO; TESTING; YEARS LIVING RADIOISOTOPES

Optional Information

Secondary number(s)
SU patent application 3983537/31-25.