Dispersed excitation spectroscopy of some weak transitions of NiF

被引:29
作者
Focsa, C
Dufour, C
Pinchemel, B
机构
[1] Lab. Dynamique Molec. et Photonique, URA CNRS No. 779, Bât. P5
关键词
D O I
10.1006/jmsp.1996.7192
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
Dispersed excitation spectroscopy, recorded through a spectrometer used as a narrowband filter, made it possible to obtain the rotational analysis of weak blended transitions of NiF. Five electronic transitions, involving a common upper state and five lower states, have been observed in the visible region. One of these transitions (17 529.5 cm(-1)) has been rotationally analyzed. Both the energy splittings between the five new low-lying states and the value of the rotational constant of the lower state of the transition analyzed (B = 0.38511 cm(-1)) are evidence that these states are not the already known five lower doublet states. Another transition (18 348 cm(-1)) involving the ground (2) Pi(3/2) state of NiF has been partially analyzed. The upper state (B' = 0.3702 cm(-1)) is also linked to the lower (2) Sigma states but not to the components of the (2) Delta state, ruling out a (2) Pi(1/2) assignment for this upper state. All these results suggest that the new observed states could be components of quartet states. (C) 1997 Academic Press.
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页码:65 / 71
页数:7
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