水中激光产生气泡的发光光谱。
Spectrum of luminescence from laser-created bubbles in water.
作者信息
Baghdassarian O, Chu H C, Tabbert B, Williams G A
机构信息
Department of Physics and Astronomy, University of California, Los Angeles, CA 90095, USA.
出版信息
Phys Rev Lett. 2001 May 21;86(21):4934-7. doi: 10.1103/PhysRevLett.86.4934.
The spectrum of the luminescence emitted at the collapse of single laser-induced bubbles in water is measured for different maximum bubble radii. Bubbles as large as 2 mm show a molecular OH() band at 310 nm in the spectrum, which otherwise can be fitted approximately with a blackbody curve at a temperature of 7800 K. This finding provides a connection between the light emission of single bubbles and multibubble sonoluminescence, since in the latter case the same molecular band is observed. Surface instabilities are observed in the larger bubbles, and may be connected with the OH() emission.
针对不同的最大气泡半径，测量了水中单个激光诱导气泡崩溃时发射的发光光谱。直径达2毫米的气泡在光谱中显示出310纳米处的分子OH()带，否则该光谱大致可由温度为7800K的黑体曲线拟合。这一发现建立了单个气泡发光与多气泡声致发光之间的联系，因为在后一种情况下也观察到了相同的分子带。在较大的气泡中观察到了表面不稳定性，这可能与OH()发射有关。
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