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Chin. Phys. B, 2015, Vol. 24(4): 047802    DOI: 10.1088/1674-1056/24/4/047802

Abnormal ionization in sonoluminescence

Zhang Wen-Juan (张文娟)a b, An Yu (安宇)a
a Department of Physics, Tsinghua University, Beijing 100084, China;
b High School Affiliated to Shanghai Jiao Tong University (Jia Ding Campus), Shanghai 201821, China

Sonoluminescence is a complex phenomenon, the mechanism of which remains unclear. The present study reveals that an abnormal ionization process is likely to be present in the sonoluminescing bubble. To fit the experimental data of previous studies, we assume that the ionization energies of the molecules and atoms in the bubble decrease as the gas density increases and that the decrease of the ionization energy reaches about 60%-70% as the bubble flashes, which is difficult to explain by using previous models.

Keywords:  sonoluminescence      ionization      ionized gas  
Received:  08 September 2014      Revised:  10 October 2014      Accepted manuscript online: 
PACS:  78.60.Mq (Sonoluminescence, triboluminescence)  
  52.25.Jm (Ionization of plasmas)  
  34.50.Gb (Electronic excitation and ionization of molecules)  

Project supported by the Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20120002110031) and the National Natural Science Foundation of China (Grant No. 11334005).

Corresponding Authors:  An Yu     E-mail:

Cite this article: 

Zhang Wen-Juan (张文娟), An Yu (安宇) Abnormal ionization in sonoluminescence 2015 Chin. Phys. B 24 047802

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