Theory of Light Emission in Sonoluminescence as Thermal Radiation

Details Theory of Light Emission in Sonoluminescence as Thermal Radiation Theory of Light Emission in Sonoluminescence as Thermal Radiation

2006-06-14

arxiv.org/abs/cond-mat/0606359v1

Phys. Rev. E 73, 056302 (2006)

Physics

Condensed Matter

Soft Condensed Matter

17 pages, 20 figures

Scientific paper

10.1103/PhysRevE.73.056302

Based on the model proposed by Hilgenfeldt {\it at al.} [Nature {\bf 398}, 401 (1999)], we present here a comprehensive theory of thermal radiation in single-bubble sonoluminescence (SBSL). We first invoke the generalized Kirchhoff's law to obtain the thermal emissivity from the absorption cross-section of a multilayered sphere (MLS). A sonoluminescing bubble, whose internal structure is determined from hydrodynamic simulations, is then modelled as a MLS and in turn the thermal radiation is evaluated. Numerical results obtained from simulations for argon bubbles show that our theory successfully captures the major features observed in SBSL experiments.

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