Measuring system of a borehole probe

Details Measuring system of a borehole probe Measuring system of a borehole probe

G - Physics

01

V

358/3

G01V 5/04 (2006.01) G01V 5/12 (2006.01)

Patent

CA 1148277

ABSTRACT A borehole probe for use in analysing or carrying ground using non- disposure x-ray fluorescence is described. A Co-57 radiation source is housed within a shield which defines with another shield a conical collimator which directs primary radiation to the surrounding earth. A detector is shielded by the other shield from direct radiation from the source. The other shield is formed in two parts, a top conical part and a bottom cylindrical part which has a window for permitting secondary radiation arising in the ore-bearing surround earth to pass to the detector. The source and detector can be moved axially towards and away from each other to achieve a desirable angle of backscatter. The source and detector can he located very close to each other so that this angle approaches 180° which is the optimum angle.

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