Optical properties of water near its critical point with implications for Sonoluminescence
Abstract
Recent studies of Sonoluminescence (SL) have found light pulse duration in the picosecond range. Current theories fall short of a definite explanation for these short durations. A comprehensive background and review of current theories for the pulse shortness and the shortcomings of these theories is presented. Bubble system thermodynamics is investigated. Energy allocation is analyzed from the thermodynamics and quantum level. A new explanation involving the optical effect of near critical point water is presented. Conditions in the fluid layer surrounding a collapsing cavity are investigated and existence of near critical point fluid is established. A model for the optical behavior of opalescent water is devised. A computational engine is constructed to test the model's effect on light emitted from the collapsing bubble. Numerous simulations were run and their individual and statistical behavior is reviewed, and conclusions are drawn.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- 2007
- Bibcode:
- 2007PhDT.......144R