arXivDaily arXiv每日学术速递 周一至周五更新
arXiv physics/0604160physics.flu-dyn
收藏

稳定非稀有气体单泡声致发光光谱

Spectra of Stable Non-Noble Gas Single Bubble Sonoluminescence

Mogens T. Levinsen, Jeppe Seidelin Dam

摘要:

一个普遍接受的观点是,稳定的单泡声致发光(SBSL)只能在惰性气体或氢气的存在下实现。在空气播种气泡中,双原子气体的含量被烧掉,留下维持稳定操作所需的少量氩气。在这里,我们报告说,长期稳定的SBSL可以持续只有氮气,氧气,或氮/氧混合物存在。与稳定的氩泡相比,这种辐射要弱得多,光谱看起来也冷得多。振荡态以及回收状态也被观察到。一个有趣的饱和效应似乎与气泡中水蒸气的存在有关。

英文摘要:

A commonly accepted view is that stable Single Bubble Sonoluminescence (SBSL) can only be achieved in the presence of a noble gas or hydrogen. In air-seeded bubbles, the content of diatomic gasses is burned off to leave the small amount of argon needed to sustain stable operation. Here we report that long term stable SBSL can be sustained with only nitrogen, oxygen, or nitrogen/oxygen mixtures being present. Compared to that of a stable argon bubble, the emission is much weaker and the spectrum looks much colder. Oscillating states as well as recycling states are also observed. An intriguing saturation effect seems connected with the presence of water vapor in the bubble.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑