Time-resolved spectra of single-bubble sonoluminescence in sulfuric acid with a streak camera

被引：33

作者：

Chen, Weizhong ^{[1
]}

Huang, Wei

Liang, Yue

Gao, Xianxian

Cui, Weicheng

机构：

[1] Nanjing Univ, Key Lab Modern Acoust, Minist Educ, Nanjing 210093, Peoples R China

来源：

PHYSICAL REVIEW E | 2008年 / 78卷 / 03期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1103/PhysRevE.78.035301

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The time-resolved spectra of single-bubble sonoluminescence (SBSL) in sulfuric acid have been observed with a streak camera after a spectrograph. The spectral center evolves from infrared to ultraviolet gradually within a SBSL duration, which corresponds to an increase of temperature. The peak temperature within one sonoluminescence (SL) duration is 5-9 times higher than the average temperature based on the average spectrum in our experiment. Furthermore, the ratio of the peak temperature to average temperature increases with the increase of driving pressure. The SBSL flash dies out after a dramatic heating-up, and there is no cooling procedure observed at the time resolution of 1/10 SL duration, which is incompatible with the radius-related adiabatic heating model as the mechanism of SBSL.

引用

页数：4

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