Effect of noble gases on sonoluminescence temperatures during multibubble cavitation
Effect of noble gases on sonoluminescence temperatures during multibubble cavitation
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DOI：
10.1103/physrevlett.84.777
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发表时间：
2000-01-24
影响因子：
8.6
通讯作者：
Suslick, KS
中科院分区：
文献类型：
--
作者：
Didenko, YT;McNamara, WB;Suslick, KS
声致发光光谱收集从Cr（CO）（6）的辛醇和十二烷饱和的各种惰性气体的溶液。激发态金属原子的辐射可以作为空化的内部温度计。声致发光的强度和温度从氦到氦逐渐增加。然而，随着温度的升高，底层连续谱的强度比线发射的强度增长得更快。气泡内的溶剂分子的解离消耗了由塌陷气泡产生的能量的很大一部分，这可以限制气泡内的最终温度。
Sonoluminescence spectra were collected from Cr(CO)(6) solutions in octanol and dodecane saturated with various noble gases. The emission from excited-state metal atoms serves as an internal thermometer of cavitation. The intensity and temperature of sonoluminescence increases from He to Xe. The intensity of the underlying continuum, however,grows faster with increasing temperature than the line emission. Dissociation of solvent molecules within the bubble consumes a significant fraction of the energy generated by the collapsing bubble, which can limit the final temperature inside the bubble.