Accession Number:

AD0260534

Title:

ACOUSTIC MODULATION OF THE CONDUCTIVITY OF SALT SOLUTIONS

Descriptive Note:

Corporate Author:

GEORGIA INST OF TECH ATLANTA ENGINEERING EXPERIMENT STATION

Report Date:

1961-06-28

Pagination or Media Count:

55.0

Abstract:

The fractional change of the conductivity of aqueous sodium chloride solutions produced by an acoustic wave were measured and found to be 0.7 x 10 to the -10th power per dynesq cm pressure change at room temperature over a concentration range of 0.3 to 3.0 molal. The measurements are consistent with predictions based on theory and static data and with previous measurements of the change in the low-frequency bulk conductivity of salt water produced by an acoustic wave. The measurements were made by reflecting electromagnetic and acoustic waves from the salt water surface in a coaxial test cell at a radio frequency of 146 mc and acoustic frequencies in the range of 15 to 30 kc. The equipment used is capable of measuring an amplitude modulation index lower than 160 db below 100 for 1 cps of bandwidth.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Electrical and Electronic Equipment
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE