高等学校化学学报

高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (2): 286.

• 论文 • 上一篇    下一篇

四极质谱法研究激光烧蚀Y1Ba2Cu3O7-δ产物的分布

唐永新, 党海军, 章壮健, 秦启宗   

  1. 复旦大学激光化学研究所, 上海 200433
  • 收稿日期:1998-06-09 出版日期:1999-02-24 发布日期:1999-02-24
  • 通讯作者: 秦启宗
  • 作者简介:唐永新,男,24岁,硕士研究生.
  • 基金资助:

    国家自然科学基金(批准号:29683001)

A Quadrupole Mass Spectrometric Study on Pulsed Laser Ablation of Y1Ba2Cu3O7-δ

TANG Yong-Xin, DANG Hai-Jun, ZHANG Zhuang-Jian, QIN Qi-Zong   

  1. Laser Chemistry Institute, Fudan University, Shanghai, 200433
  • Received:1998-06-09 Online:1999-02-24 Published:1999-02-24

PDF (PC)

摘要： 采用空间和时间分辨的四极质谱法研究了355nm脉冲激光烧蚀高Tc超导体Y1Ba2Cu3O7-δ的产物分布.对于同一金属元素(Y、Ba和Cu)的原子和离子,它们的飞行时间(TOF)谱具有比较接近的形状,而对于O原子,则有很大的差异.激光能量密度的变化并不影响各产物粒子的平动能.各金属粒子的空间角分布一般符合cosnθ分布.

关键词: 脉冲激光烧蚀, 空间角分布, Y1Ba2Cu3O7-&delta,

Abstract: Pulsed laser ablation of Y1Ba2Cu3O7-δat 355 nm has been investigated with a quadrupole mass spectrometric technique. The profiles of the TOF spectra of Y, Ba and Cu atoms and ions are nearly the same. The translational energies of ionic ablated species estimated from their TOF spectra are independent on the laser fluences. The angular distributions can be well fitted by the expression of ccosnθ for ionic ablated Y+, Ba+and Cu+. The production of BaO, YO and CuO might have different mechanisms.

Key words: Pulsed laser ablation, Space angle distribution, Y1Ba2Cu3O7-δ

中图分类号: 

TrendMD: