Sonoluminescence test for equation of state in warm dense matter
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AbstractIn experiments of Single-bubble Sonoluminescence (SBSL), the bubble is heated to temperatures of a few eV in the collapse phase of the oscillation. Our hydrodynamic simulations show that the density inside the bubble can go up to the order of 1 g/cm(3), and the electron density due to ionization is 10(21)/cm(3). So the plasma coupling constant is found to be around 1 and the gas inside the bubble is in the Warm Dense Matter (WDM) regime. We simulate the light emission of SL with an optical model for thermal radiation which takes the finite opacity of the bubble into consideration. The numerical results obtained are compared with the experimental data and found to be very sensitive to the equation of state (EOS) used. As theories for the equation of state, as well as the opacity data, in the WDM regime are still very uncertain. we propose that SL may be a good low-cost experimental check for the EOS and the opacity data for matter in the WDM regime. (C) 2009 Elsevie B.V. All rights reserved.
All Author(s) ListNg SF, Barnard JJ, Leung PT, Yu SS
Name of Conference17th International Symposium on Heavy Ion Inertial Fusion
Start Date of Conference04/08/2008
End Date of Conference08/08/2008
Place of ConferenceTokyo
Journal nameNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume Number606
Issue Number1-2
Pages172 - 176
LanguagesEnglish-United Kingdom
KeywordsEquation of state; Sonoluminescence; Warm dense matter
Web of Science Subject CategoriesInstruments & Instrumentation; INSTRUMENTS & INSTRUMENTATION; Nuclear Science & Technology; NUCLEAR SCIENCE & TECHNOLOGY; Physics; Physics, Particles & Fields; PHYSICS, PARTICLES & FIELDS; Spectroscopy; SPECTROSCOPY

Last updated on 2020-19-09 at 02:10