Density Distributions of H and H2 in Pulsed Microwave Hydrogen Plasmas
DUAN Xu-Ru1 , H. Lange2 , QIAN Shang-Jie1 , N. Lang2
1 Southwestern Institute of Physics, PO Box 432, Chengdu 610041
2 Institute of Low Temperature Plasma Physics, Greifswald 17489, Germany
Density Distributions of H and H2 in Pulsed Microwave Hydrogen Plasmas
DUAN Xu-Ru1 ;H. Lange2 ;QIAN Shang-Jie1 ;N. Lang2
1 Southwestern Institute of Physics, PO Box 432, Chengdu 610041
2 Institute of Low Temperature Plasma Physics, Greifswald 17489, Germany
关键词 ：
52.70.-m ,
52.20.-j ,
31.70.Hq ,
32.50.+d ,
33.50.Dq
Abstract ： Temporal distribution of the H atom and H2 densities in a pulsed microwave hydrogen plasmas has been measured simultaneously by two-photon absorption laser-induced fluorescence (TALIF). The measurement of the H-atom absolute density obtained by NO2 titration in a flow tube reactor shows that the density of H2 could be determined by the measured effective lifetime of the TALIF signal via the quenching equation. The H-atom density of about 1.5 x 1015 cm-3 in both pulsed and stationary phases does not obviously change. It is found that the gas temperature volume effect plays an important role in governing the distributions of the H-atom density and it is mole fraction. The calculated gas temperature is in good consistent with the rotational temperature of H2 measured by optical emission spectroscopy in pulsed phase.
Key words ：
52.70.-m
52.20.-j
31.70.Hq
32.50.+d
33.50.Dq
出版日期: 2003-04-01
:
52.70.-m
(Plasma diagnostic techniques and instrumentation)
52.20.-j
(Elementary processes in plasmas)
31.70.Hq
(Time-dependent phenomena: excitation and relaxation processes, and reaction rates)
32.50.+d
(Fluorescence, phosphorescence (including quenching))
33.50.Dq
(Fluorescence and phosphorescence spectra)
引用本文:
DUAN Xu-Ru;H. Lange;QIAN Shang-Jie;N. Lang. Density Distributions of H and H2 in Pulsed Microwave Hydrogen Plasmas[J]. 中国物理快报, 2003, 20(4): 489-492.
2 in Pulsed Microwave Hydrogen Plasmas. Chin. Phys. Lett., 2003, 20(4): 489-492.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2003/V20/I4/489
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