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Level crossings in the 2B1 state of NO2: Rotational analysis by polarization spectroscopy

✍ Scribed by Nobuo Sugimoto; Sanzo Takezawa

Publisher: Elsevier Science
Year: 1985
Tongue: English
Weight: 421 KB
Volume: 118
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(85)85363-x

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✦ Synopsis

Rotational structures of the 'El, state of NO, are analyzed by polarization spectroscopy. Shifts of the rotational energy levels and spin splittings showing level crossings were observed. It is concluded from tie analysis that the spin splitting in the 'El, shade 1s intnnsieally very small and large splittings are due to perturbations by other wbroruc states_ 1 _ Introduction In our previous paper [l] we reported the observation of spin splittings in the 474 and 455 nm bands of NO2 by means of polarization spectroscopy method. By using the polarization spectrum with a linearly or a circularly polarized pump beam, the hnes of the Q branch were distmguished from those of the P and R branches_ The spin splittmg was observed in most of the lines of the 474 nm band and uz several lmes of the 455 nm band. Thus we applied the equation. F, -F2 = E(N + g), and obtamed the spin-rotation constants.

In this paper we report the measurement and analysis of the polanzation spectrum in the 437 and 495 nm bands as well as the more detailed analysis of the rotational structures and spin splittings in the 474 and 455 nm bands.

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