A study by emission spectroscopy of the N-2 active species in pulsed DC discharges

被引：41

作者：

Bruhl, SP ^{[1
]}

Russell, MW ^{[1
]}

Gomez, BJ ^{[1
]}

Grigioni, GM ^{[1
]}

Feugeas, JN ^{[1
]}

Ricard, A ^{[1
]}

机构：

[1] UNIV TOULOUSE 3,CPAT,F-31062 TOULOUSE,FRANCE

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 1997年 / 30卷 / 21期

关键词：

D O I：

10.1088/0022-3727/30/21/002

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

From the optical emission of N-2 and N-2(+) radiative states in the negative glow of N-2 DC pulsed discharges at pressures 1-4 Torr (133-532 Pa) and current densities 1-6 mA cm(-2), it has been determined that the vibrational excitation of the N-2 state deviates from a Boltzmann distribution and strong intensities of the N-2 second positive system (especially from v = 1) were also observed in the afterglow. Such strong emission is interpreted in terms of the growing of the N-2(X, v) vibrational distribution in the post-discharge region as the gas temperature is reduced. The N-2(+)(B-2 Sigma(u)(+)) states are mainly produced by electron collisions on N-2(+)(X) ions under discharge conditions and quickly disappear in the afterglow as a result of N-2(+)-electron recombination.

引用

页码：2917 / 2922

页数：6

共 13 条

[1]

CAPITELLI M, 1981, J PHYSIQUE LETT, V42, P469

[2] ABSOLUTE CROSS-SECTIONS FOR ELECTRON-IMPACT EXCITATION OF N2+ [J].