RESONANT SCATTERING OF GAMMA RAYS AS SELECTIVE MEANS FOR DETERMINING AN ELEMENT OF INTEREST

A radioactive logging method and apparatus for quantitatively determining an element of interest in subsurface formations traversed by a borehole. Earth formations are bombarded with fast neutrons causing the various elements to emit characteristic gamma rays. These gammas strike resonant scatter ma...

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Bibliographic Details
Main Authors WALTER H. JOHNSON JR, WILLIAM C. PRITCHETT
Format Patent
LanguageEnglish
Published 04.04.1972
Subjects
DETECTING MASSES OR OBJECTS
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
MEASURING
PHYSICS
TESTING
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Summary:A radioactive logging method and apparatus for quantitatively determining an element of interest in subsurface formations traversed by a borehole. Earth formations are bombarded with fast neutrons causing the various elements to emit characteristic gamma rays. These gammas strike resonant scatter material which is specially selected to elastically scatter only those gammas derived from the element of interest. The scattered gammas thus obtained are detected with a scintillator and a photomultiplier.
Bibliography:Application Number: USD3654464