Theory of Light Emission in Sonoluminescence as Thermal Radiation

Abstract

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.

arXiv comment17 pages, 20 figures

References in corpus (6)

• Gauge Theories with Cayley-Klein $SO(2;j)$ and $SO(3;j)$ Gauge Groups
• Sonoluminescence as quantum vacuum radiation
• Water temperature dependence of single bubble sonoluminescence
• Sonoluminescence: Nature's Smallest BlackBody
• Relativistic Thermal Bremsstrahlung Gaunt Factor for the Intracluster Plasma
• Relativistic Thermal Bremsstrahlung Gaunt Factor for the Intracluster Plasma. II. Analytic Fitting Formulae