Second-order Zeeman effect of theX−B transition in molecular iodine

Abstract

Saturated absorption spectroscopy was applied to study the line shape of the molecular iodineX(ν″ = 0,J″ = 13,15) →B(ν′ = 43,J′ = 12, 16) transition (λ = 514.5 nm) in a transversal magnetic field as high as 0.51 T. The Zeeman structure of several hyperfine structure (hfs) components was completely resolved and a detailed study of the second-order Zeeman shift and splitting was made. The anisotropic Magnetic Susceptibility (MS) of the molecular iodine both in theB(43) (X′ = 7.3 ± 1 × 10⁻³⁴ J/Oe²) and theX(0) [χ″ = (0.6 ± 1) × 10⁻³⁴ J/Oe²] states as well as the isotropic MS difference [χ′0 −χ″o = (2 ± 0.2) × 10⁻³⁴ J/Oe²] was measured.