VIBRATIONAL-LEVEL DISTRIBUTION IN ELECTRON-IMPACT EXCITATION OF THE N2 C3-PI-U STATE - ITS DISAGREEMENT WITH THE FRANCK-CONDON APPROXIMATION

被引：8

作者：

HIRABAYASHI, A ^{[1
]}

ICHIMURA, A ^{[1
]}

机构：

[1] INST SPACE & ASTRONAUT SCI,SAGAMIHARA,KANAGAWA 229,JAPAN

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1991年 / 60卷 / 03期

关键词：

NITROGEN MOLECULE; EXCITATION CROSS SECTION; VIBRATIONAL LEVEL; THE FRANCK-CONDON FACTOR; EXPERIMENTAL STUDY;

D O I：

10.1143/JPSJ.60.862

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Validity of the Franck-Condon approximation is experimentally examined for electron-impact excitation of the C3 PI-u state of N2 molecule. The relative excitation cross-sections for associated vibrational levels up to upsilon = 4 at an electron energy of 48 eV are derived with measuring the emission band intensities of the second positive system. The result is compared with the prediction by the approximation, and appreciable discrepancies are found between them. In particular, the ratio-sigma-upsilon = 3/sigma-upsilon = 0 of the cross-sections obtained is by about a factor of two larger than the corresponding ratio of the Franck-Condon factors.

引用

页码：862 / 867

页数：6

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