NEAR-INFRARED DIODE-LASER SPECTROSCOPY OF THE (2, 0) BAND OF THE ALPHA-2-PI-U-CHI-2-SIGMA-G+ SYSTEM OF THE N-2+ ION

被引：16

作者：

HARADA, K

WADA, T

TANAKA, T

机构：

[1] Kyushu Univ 33, Fac Sci, Dept Chem, Fukuoka, 812, Hakozaki, Higashi Ku

来源：

JOURNAL OF MOLECULAR SPECTROSCOPY | 1994年 / 163卷 / 02期

关键词：

D O I：

10.1006/jmsp.1994.1038

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

The (2.0) vibrational band of the A2Πu-X2Σ+g system of the N+2 ion has been observed by near-infrared diode laser absorption spectroscopy. A signal-to-noise ratio greater than 50 at a time constant of 100 msec was obtained using the hollow cathode discharge modulation technique. In total, 108 lines were identified as belonging to the (2,0) band of the N+2A-X system. The observed wavenumbers were least-squares fitted, yielding precise spectroscopic constants, the band origin T20 and the spin-orbit coupling constant A2 being 12 732.83583(31) and -74.63529(54) cm-1, respectively, where the uncertainties given in the parentheses correspond to one standard deviation. The Dunham coefficients revised by combination of the present result and previous results of high-resolution studies are also presented. © 1994 Academic Press. All rights reserved.

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页码：436 / 442

页数：7

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