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Effect of Concentration Gradients on the Performance of a Nuclear Sediment Concentration Gage
Author(s) -
McHenry J. R.,
Coleman N. L.,
Willis J. C.,
Gill A. C.,
Sansom O. W.,
Carroll B. R.
Publication year - 1970
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/wr006i002p00538
Subject(s) - flume , sediment , attenuation , geology , geotechnical engineering , hydrology (agriculture) , environmental science , soil science , geomorphology , mechanics , physics , breakup , optics
A nuclear sediment concentration gage, using the attenuation of 22‐kev X rays from cadmium‐109 as a function of concentration, was evaluated in a series of laboratory tests conducted in a circulating water tunnel. Sediment concentration measurements were made with the X‐ray beam directed up, down, and across the test flume section. Coarse sand, fine sand, and kaolin were used as sediments in concentrations of 100 to 30,000 ppm. The suspensions were passed through the water tunnel at velocities of 0.7 to 3 meters sec −1 . The response of the nuclear sediment concentration gage was not affected significantly by test position, type or size of particle, or velocity of sediment, but was a function of the total concentration of sediment in the test cross section.