Volume 56, Number 6, December 2001
|Page(s)||891 - 897|
|Section||Condensed matter: electronic structure, electrical magnetic and optical properties|
|Published online||01 December 2003|
Ionization and photon emission in single-bubble sonoluminescence
Department of Physics, The Chinese University of Hong
Kong Shatin, Hong Kong, PRC
2 LSEC and Institute of Computational Mathematics Academy of Mathematics and System Sciences - Academia Sinica, Beijing 100080, PRC
3 Nonlinear Center, University of Science and Technology of China Hefei 230026, PRC
Accepted: 1 October 2001
The full set of hydrodynamic equations governing the pulsation of a sonoluminescing (SL) bubble is solved numerically taking ionization into account. We find that the hydro-thermal processes in an SL bubble are dominated by the formation of compression waves and up to 27% of first-level ionization. The ionized core is optically opaque, and the modified emitted light power and pulse widths, as well as their wavelength dependence, are in excellent agreement with experimental data.
PACS: 78.60.Mq – Sonoluminescence; triboluminescence / 47.40.-x – Compressible flows; shock and detonation phenomena / 52.50.Lp – Plasma production and heating by shock waves and compression
© EDP Sciences, 2001
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