标题： 水温对声致发光的约束 显示英文标题

标题： Water temperature constraint on Sonoluminescence

摘要： 提出了一种观点，即小气泡内气体中的激波动力学可以解释声致发光，即可见辐射的发射。 当气泡半径振荡时，来自气泡内部气体中产生的球面声波会形成激波。 当任何这样的激波朝中心传播时，它会增强，并在汇聚和随后反射后，使气泡内气体的温度显著升高，从而可以产生等离子体。 由于在爆炸阶段的主要辐射产物，在压缩激波的非绝热条件下，冷却等离子体并导致爆炸激波无法充分升高温度以产生辐射。 在本工作中，我们将等离子体通过轫致辐射的冷却时间与压缩激波的坍缩时间进行比较。 我们发现气泡半径相对于水温有一个约束条件。 这个约束条件解释了实验结果，即为什么冷水适合声致发光。 显示英文摘要

摘要： It is proposed that shock wave dynamics within the gas of a small bubble explain sonoluminescence, the emission of visible radiation. As the bubble radius oscillates, shock waves develop from spherical sound waves created inside the gas bubble. As any such shock propagates toward the center, it strengthens and, upon convergence and subsequent reflection, temperature of gas inside bubble increases dramatically in such a way that it can produce plasma. Since main radiation product in exploding epoch, nonadiabatic condition for imploding shock wave cool plasma and cause exploding shock wave can not sufficiently rise temperature to produce radiation. In this work we compare cooling time for plasma by bermsstrahlung radiation with collapsing time for the imploding shock wave . We find a constraint on radius of bubble with respect to temperature of water. This constraint condition explains experimental results as to, why the cold water is fine for SL.