THE USE OF NEUTRON METHODS IN THE GEOCHEMICAL EXPLORATION AND ANALYSIS OF BORON DEPOSITS

Journal Article · Sat Dec 31 23:00:00 EST 1960 · Geokhimiya (U.S.S.R.) For English translation 1956-63 see Geochemistry (USSR)

OSTI ID:4843598

Ivanova, V F; Kirnozov, F F

A 1.5-curie Po-Be source furnishes fast neutrons which are used to irradiate the surrounding medium in a borehole. The decrease in the count of the secondary gamma radiation or of the thermal neutron flux gives an accurate indication of the B/sub 2/O/sub 3/ content in the rock up to about 2-3% B/sub 2/O/ sub 3/. For higher boron contents in the rock it is necessary to surround the neutron counter with a cadmium-paraffin filter, and count the epithermal neutron flux in order to determine a content of B/sub 2/O/sub 3/ of up to 15% in the rock. The 1-mm Cd filter absorbs almost all the thermal neutrons, but transmits the epithermal neutrons which are slowed down by the backing paraffin layer and counted by the neutron counter. It was found that the epithermal neutron count is inversely proportional to the B/sub 2/O/sub 3/ content in the rock. This method can be used to detect boron deposits containing up to 15% B/sub 2/O/sub 3/ in a bore hole. (TTT)

• Research Organization: Vernadskii Inst. of Geochemistry and Analytical Chemistry, Moscow
• NSA Number: NSA-15-027874
• OSTI ID: 4843598
• Journal Information: Geokhimiya (U.S.S.R.) For English translation 1956-63 see Geochemistry (USSR), Journal Name: Geokhimiya (U.S.S.R.) For English translation 1956-63 see Geochemistry (USSR) Vol. Vol: No. 7; ISSN GEOKA
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

ABSORPTION
BERYLLIUM
BERYLLIUM OXIDES
BORON
CADMIUM
DEPOSITS
DISTRIBUTION
EFFICIENCY
EPITHERMAL NEUTRONS
FAST NEUTRONS
GAMMA RADIATION
GEOCHEMISTRY
GEOLOGY, MINERALOGY, AND METEOROLOGY
MINERALS
NEUTRON FLUX
NEUTRON SOURCES
PARAFFIN
POLONIUM
PROSPECTING
QUANTITATIVE ANALYSIS
QUANTITY RATIO
SLOWDOWN
THERMAL NEUTRONS