High-Resolution Laser Spectroscopy of theA3Π1u←X1Σg+System of I2with a Titanium:Sapphire Ring Laser

✍ Scribed by Tokio Yukiya; Nobuo Nishimiya; Masao Suzuki

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 435 KB
• Volume: 182
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1996.7216

✦ Synopsis

The Doppler-limited absorption spectrum of the vibrotational lines in the A 3 P 1u R X 1 S / g system of I 2 was measured in the region from 11,200 to 12,450 cm 01 using a Ti:sapphire ring laser. The Q-branch lines of J Å 10 to 100 belonging to the £ R £Љ Å (26 Ç 45) R 0Љ, (19 Ç 45) R 1Љ, (16 Ç 45) R 2Љ, (16 Ç 42) R 3Љ, and (22 Ç 31) R 4Љ progressions were assigned. The hyperfine splittings were observed at the vibrational states around the near-dissociation limit. The unperturbed line positions were obtained by first order approximation for the high-J rotational state. The values of

and H £ 0 HЉ £ were determined using a least-squares fitting procedure. The spectroscopic constants of T £ , B £ f , D £ f , and H £ f of £ Å 16 Ç 45 were calculated with the aid of the Dunham expansion parameters of the X state and were compared with those reported by D. R. T. Appadoo et al. (J. Chem. Phys. 104(3), 903 (1996)).