高等学校化学学报

高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (7): 1037.

• 研究简报 • 上一篇    下一篇

强短脉冲供电时空心阴极灯的放电特性研究

弓振斌, 杨芃原, 林跃河, 王小如, 黄本立   

  1. 厦门大学化学系, 厦门, 361005
  • 收稿日期:1994-06-27 修回日期:1994-12-05 出版日期:1995-07-24 发布日期:1995-07-24
  • 通讯作者: 黄本立
  • 作者简介:弓振斌,男,30岁,博士研究生.
  • 基金资助:

    国家自然科学基金;国家教育委员会博士点基金

Characteristics of a High Current Microsecond Pulsed Hollow Cathode Lamp

GONG Zhen-Bin, YANG Peng-Yuan, LIN Yue-He, WANG Xiao-Ru, HUANG Ben-Li   

  1. Department of Chemistry, Xiamen University, Xiamen, 361005
  • Received:1994-06-27 Revised:1994-12-05 Online:1995-07-24 Published:1995-07-24

PDF (PC)

被引次数

17

摘要： 空心阴极灯是原子光谱分析中常用的线光源。对它的光谱和放电特性的研究已有报道,但多为针对直流供电或一般脉冲供电状态时的空心阴极灯。黄本立等报道了市售空心阴极灯在强短脉冲供电时的时间分辩光谱特性及其作为高强度离子线或原子线光源的可行性。本文通过对Eu空心阴极灯在强短脉冲供电时的伏安特性,以及对直流和强短脉冲供电时空心阴极灯发射光谱差异的研究,探讨了强短脉冲供电时空心阴极灯的放电机制,讨论了离子线和原子线强度增强的过程。

关键词: 空心阴极灯, 强短脉冲供电, 伏安曲线, 光谱特性

Abstract: The voltage-current and spectral characteristics of a high current (up to tens of amperes)microsecond pulsed hollow cathode lamp has been studied. The intensities of the atomic and ionic lines emitted by the pulsed HCLare greatly enhanced as compared with those emitted by the same lamp with DCsupply, and the enhancement factor is much greater for the ionic lines (104) than for the atomic lines. This implies that the HCMSP HCL could be used as a convenient and inexpensive source for ionic fluorescence spectrometry.

Key words: Hollow cathode lamp, High current and microsecond pulse, Voltammetric curve, Spectral characteristics

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