Krefting Dagmar, Mettin Robert, Lauterborn Werner
Drittes Physikalisches Institut, Universität Göttingen, Bürgerstrasse 42-44, 37073 Göttingen, Germany.
Phys Rev Lett. 2003 Oct 24;91(17):174301. doi: 10.1103/PhysRevLett.91.174301.
Single bubble sonoluminescence (SBSL) is realized in air-saturated water at ambient pressure and room temperature. The behavior is similar to SBSL in degassed water, but with a higher spatial variability of the bubble position. A detailed view on the dynamics of the bubbles shows agreement between calculated shape stability borders but differs slightly in the equilibrium radii predicted by a mass diffusion model. A comparison with results in degassed water is done as well as a time resolved characterization of bubble oscillation, translation, and light emission for synchronous and recycling SBSL. The formation of streamer structures is observed in the same parameter range, when bubble nuclei are present. This may lead to a unified interpretation of SBSL and multibubble sonoluminescence.
单泡声致发光（SBSL）是在环境压力和室温下的空气饱和水中实现的。其行为与脱气水中的SBSL相似，但气泡位置的空间变异性更高。对气泡动力学的详细观察表明，计算出的形状稳定性边界之间存在一致性，但在质量扩散模型预测的平衡半径上略有不同。还对脱气水中的结果进行了比较，并对同步和循环SBSL的气泡振荡、平移和发光进行了时间分辨表征。当存在气泡核时，在相同参数范围内观察到了流光结构的形成。这可能会导致对SBSL和多泡声致发光的统一解释。
