Interferometric measurement techniques in double-diffusive systems

The objective of the project is to develop an experimental technique to measure two scalar variables in double-diffusive or other two component system. The two frequency optical decomposition techniques uses a dual frequency Mach-Zehnder Interferometer to simultaneously determine the local gradients of two scalar variables in the test system. Interferograms taken at the two different frequencies are analyzed using index of refraction data which is a function of temperature and concentration. The experimental program will be integrated with an analytical approach in an attempt to identify and assess the potential application of such a technique and the impact on stability studies in double-diffusive systems. 2 tabs.