Open AccessANALYSIS OF Hα LINE SHAPE
Author(s) -
Wei Xu,
Baonian Wan,
Jiangang Li,
Fang Tong-Zheng,
Fang Zi-Sheng,
Xie Jikang
Publication year - 1997
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.46.1360
Subject(s) - atomic physics , hydrogen , dissociation (chemistry) , ion , hydrogen atom , doppler effect , spectral line , plasma , ionic bonding , materials science , physics , molecular physics , chemistry , quantum mechanics , astronomy , group (periodic table)
The Hα line shape has been fitted with Gaussian function. Hα intensities emitted by the hydrogen atoms,which are reflected by the limiter,and produced from hydrogen molecular dissociation and charge-exchange,were obtained. We have also obtained their incident velocity and ion temperature from Doppler broadening and Doppler shift. This paper discussed the hydrogen atom transport with a simplified model gave the profile of hydrogen atom density and emission coefficient,and analyzed the influence of incident velocity on particle confinement time. Hydrogen atom energy spectra have been also derived from the Hα line shape,It shows that the main molecular processes at the edge of the plasma are hydrogen molecular dissociative excitation and ionic dissociation.