物理化学学报 >> 1987, Vol. 3 >> Issue (04): 357-361.doi: 10.3866/PKU.WHXB19870405

研究论文 上一篇    下一篇

VA族元素氢化物的紫外光解和多光子电离
Ⅲ. AsH3分子的紫外激光光解和多光子电离

倪图强; 陆庆正; 俞书勤; 孔繁敖*   

  1. 中国科学技术大学近代化学系 合肥
  • 收稿日期:1985-11-04 修回日期:1986-06-30 发布日期:1987-08-15
  • 通讯作者: 孔繁敖

THE UV PHOTOLYSIS AND MULTIPHOTON IONIZATION OF HYDRIDES OF GROUP VA ELEMENTS (Ⅲ)

Ni Tuqiang; Lu Qinzheng; Yu Shuqin; Kong Fanao*   

  1. Department of Nodern Chemistry; The University of Science and Technology of China Hefei; Anhui
  • Received:1985-11-04 Revised:1986-06-30 Published:1987-08-15
  • Contact: Kong Fanao

摘要: 通过193 nm的ArF激光光解AsH_3, 首次在420-650 nm之间观察到了AsH_2(Ã ~2A_1→X ~2B_1)的发射光谱。经过认证之后, 获得了v=19928+868v′_2-3v′_2~2-(989v″_2-6v″_2~2)的经验公式, 并辨认了七个谱带系。AsH_2(Ã ~2A_1)的辐射寿命是(130±20)ns。此外, 还观察到四条As(5s→4p)的原子发射谱线和多光子电离信号。

Abstract: The spectrum of AsH_2(Ã ~2A_1-X ~2B_1) from 402 nm to 650 nm was first ob- served via ArF laser photolysis of AsH_3. Seven band series were assigned and the relation v=19928+868v′2-3v′2~2- (987v″_2-6v″_2~2) was obtained. The radiative lifetime of (130±20)ns was measured for AsH_2(Ã ~2A_1). Emission spectra from nascent As atom and a multiphoton ionization signal were obtained.