The Effect of Selective Vaporization on TEA CO_2 Laser Induced Shock Wave Plasma

この論文にアクセスする

この論文をさがす

著者

抄録

TEA CO<SUB>2</SUB> laser (130mJ, 100ns) and Nd-YAG laser (50mJ, 8ns) pulses were employed to generate secondary plasma from brass samples in air under a reduced pressure of 1 Torr. The vaporization effects on Zn and Cu were studied in terms of their emission characteristics for the two cases. In the case of TEA CO<SUB>2</SUB> laser, the emission intensities of copper spectral lines are extremely low, compared to the zinc spectral lines, indicating a highly selective-vaporization effect. The time-profiles of the emission intensities of ZnI 481.0nm and CuI 327.4nm spectral lines observed near the target surface clearly showed that vaporization of Cu atoms occurred later and continued for a long time at a relatively low gushing speed, while the vaporization of Zn atoms took place sooner with a higher gushing speed. It was shown that only Zn atoms form a shock front, and Cu atoms are left behind the shock-wave and are not excited. This selective vaporization process does not occur at a laser power density considerably higher than the threshold for the plasma generation as demonstrated by the use of Nd-YAG laser of higher power density. This phenomenon of selective vaporization described in the present paper also supports our laser-induced shock wave model.

収録刊行物

  • 分光研究 = Journal of the spectroscopical research of Japan  

    分光研究 = Journal of the spectroscopical research of Japan 47(5), 220-227, 1998-10-15 

    The Spectroscopical Society of Japan

参考文献:  28件

参考文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

各種コード

  • NII論文ID(NAID)
    10002582408
  • NII書誌ID(NCID)
    AN00222531
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00387002
  • NDL 記事登録ID
    4586115
  • NDL 雑誌分類
    ZM35(科学技術--物理学)
  • NDL 請求記号
    Z15-1
  • データ提供元
    CJP書誌  NDL  J-STAGE 
ページトップへ