中国物理B ›› 2015, Vol. 24 ›› Issue (4): 47802-047802.doi: 10.1088/1674-1056/24/4/047802

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Abnormal ionization in sonoluminescence

张文娟a b, 安宇a   

  1. a Department of Physics, Tsinghua University, Beijing 100084, China;
    b High School Affiliated to Shanghai Jiao Tong University (Jia Ding Campus), Shanghai 201821, China
  • 收稿日期:2014-09-08 修回日期:2014-10-10 出版日期:2015-04-05 发布日期:2015-04-05
  • 基金资助:

    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).

Abnormal ionization in sonoluminescence

Zhang Wen-Juan (张文娟)a b, An Yu (安宇)a   

  1. a Department of Physics, Tsinghua University, Beijing 100084, China;
    b High School Affiliated to Shanghai Jiao Tong University (Jia Ding Campus), Shanghai 201821, China
  • Received:2014-09-08 Revised:2014-10-10 Online:2015-04-05 Published:2015-04-05
  • Contact: An Yu E-mail:anyuw@mail.tsinghua.edu.cn
  • Supported by:

    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).

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摘要：

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.

关键词: sonoluminescence, ionization, ionized gas

Abstract:

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.

Key words: sonoluminescence, ionization, ionized gas

中图分类号:  (Sonoluminescence, triboluminescence)

  • 78.60.Mq
52.25.Jm (Ionization of plasmas) 34.50.Gb (Electronic excitation and ionization of molecules)