Sonoluminescence and acoustic cavitation

作者: Pak-Kon Choi

DOI: 10.7567/JJAP.56.07JA01

关键词:

摘要: Sonoluminescence (SL) is light emission under high-temperature and high-pressure conditions of a cavitating bubble intense ultrasound in liquid. In this review, the fundamentals interactions between sound field bubble, bubbles are explained. Experimental results on high-speed shadowgraphy dynamics multibubble SL shown, demonstrating that intensity closely related to dynamics. studies alkali-metal atom (Na K) summarized. The spectral measurements solutions with different noble-gas dissolutions surfactant solutions, spatiotemporal separation distribution strongly suggested site gas phase inside bubbles. indicated lines composed two kinds lines: component broadened shifted from original D arises van der Waals molecules formed atoms extreme at collapse. other exhibiting no broadening shift was originate higher temperature than those producing component.

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