Transition Radiation and the Origin of Sonoluminescence
arXiv:quant-ph/9910079 · doi:10.1103/PhysRevE.61.6639
Abstract
It has been shown by Liberati et al. [quant-ph/9904013] that a dielectric medium with a time-dependent refractive index may produce photons. We point out that a free electric charge which interacts with such a medium will emit quantum mechanically modified transition radiation in which an arbitrary odd number of photons will be present. Excited atomic electrons will also exhibit a similarly modified emission spectrum. This effect may be directly observable in connection with sonoluminescence.
13 pages. Discussion improved and references added. To appear in Phys. Rev. E
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