Observation of spin splittings in the 2B1 state of no2 by means of polarization spectroscopy

✍ Scribed by Nobuo Sugimoto; Nobuo takeuchi; Hiroaki IIjima; Toshihiro Arai; Sanzo Takezawa

• Publisher: Elsevier Science
• Year: 1984
• Tongue: English
• Weight: 339 KB
• Volume: 106
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(84)85327-0

✦ Synopsis

Polarization specrroscopy was applied to the analysis of the ' 61 (K' = 0)-'/x1 subbands of SO2 3117-l and 455 nm. The lines of the Q brdnch were distinyishcd from the lines of the P and R branches by using 3 linearly or circulxly pobrizrd pump beam. The spin splittings in the *B, state wcrc obscrvcd and analyzed. I. Introduction The absorption spectrum of NO, is extremely complicated in tic blue region because of the overlapping of the "B, --"A, and zB2--'A, systems, which have ill-behaved vibrational and rotational structures [l] _ The "B, -?A, absorption system of NO? was first identified by Douglas and Huber [2], and the rotational structures of the K' = O-K" = 1 subbands at 454.5,436-g and 391 .l nm were analyzed. Later, Hardwick and Brand [3] gave a vibrational assignment to these sublevels of the ?B1 state.

Recently, the present authors [4,5] have analyzed the 2Bl -"A, subbands at 495.0 and 474.0 nm by means of an excitation spectrum monitored through the v2 or the 3~~ fluorescence band. Also, for the Douglas-Huber bands at 454.5 and 436.9 nm, we were able to extend the rotational analysis to levels with lower rotational quantum numbersN'.

As described in our previous papers [4,5], spin * Visiting ~cllow of The National lnstitutc for Environmental Stud&.