Laser-Excited Fluorescence Spectra of Strontium Monoiodide

✍ Scribed by A. Bernard; C. Effantin; J. d'Incan; A. Topouzkhanian; G. Wannous

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 435 KB
• Volume: 195
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1999.7804

✦ Synopsis

Fluorescence spectra of strontium monoiodide excited by Ar ϩϩ and Kr ϩ laser lines have been analyzed by Fourier transform spectrometry. Rotational levels have been populated either directly or after collisional relaxation: (i) in D 2 ⌺ ϩ (v ϭ 0, 1) by ultraviolet lines of Ar ϩϩ , inducing numerous fluorescence transitions ending in the levels v ϭ 0 -3 of the strongly interacting A 2 ⌸ and B 2 ⌺ ϩ states, (ii) in A 2 ⌸ 3/ 2 (v ϭ 0-4) by Kr ϩ line at 676.44 nm, de-exciting into transitions to X 2 ⌺ ϩ (v ϭ 0-6). Deperturbed constants for A 2 ⌸ and B 2 ⌺ ϩ states and A ϳ B interaction parameter are calculated from the numerical treatment of D 2 ⌺ ϩ (v ϭ 0, 1) 3 A 2 ⌸ (v ϭ 0-3) ϳ B 2 ⌺ ϩ (v ϭ 0-3) transitions. Rotational constants for D 2 ⌺ ϩ (v ϭ 0, 1) are obtained for the first time. The wavenumbers of some 670 fluorescence lines are cataloged.