C. He et Ae. Hay, BROAD-BAND MEASUREMENTS OF THE ACOUSTIC BACKSCATTER CROSS-SECTION OF SAND PARTICLES IN SUSPENSION, The Journal of the Acoustical Society of America, 94(4), 1993, pp. 2247-2254
A method using a broadband transducer to measure the acoustic backscat
ter cross section of suspended sand particles is investigated. The fre
quencies used range from 1.3 to 2.8 MHz, and the sand sizes from 100-
to 350-mum diameter. The measurements are made in the transducer near
field. The measured form factor is compared with the theoretical resul
t for the movable rigid sphere model, and with previous narrow-band me
asurements.