Anomalous behaviour of the Landé factors and the chemical shift close to the dissociation limit of the B state of molecular iodine

✍ Scribed by G. Gouedard; M. Broyer; J. Vigué; J.C. Lehmann

• Publisher: Elsevier Science
• Year: 1976
• Tongue: English
• Weight: 382 KB
• Volume: 43
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(76)80771-3

✦ Synopsis

Resonances in a modulatwl light beam have been observed on five transitions in the visible band system of 12. L.andi factorsg/ and chemical shiftsgt have been mwsured for levels very close lo the dissociation limit of the B state.

Since the B state of molecular iodine is a 311& the electronic magnetic moment is zero. The LandC factor g, is therefore of the order of a hundredth in nuclear units [l ] . To interp:et the Zeeman effect in the B state one must consider the recently measured hyperfine structure [2] and the magnetic moment of the two '271 nuclei. The effective Zecman hamiltonian may then be written: % = -g,cct.,ftffo -(gr + g1 )++. J is the rotational anwlar momentum, I is the total nuclear spin, g1 is the l 27 I nuclear g factor: g, = 1 .I 2 (31 andgl is a diamagnetic correction or chemical shift. Measurements ofgl mostly exist for ' C ground elec-trorJc states of molecules, when it is found [4] to be