Zeeman Effect of R Lines in TlCr-alum

Abstract

Zeeman effect of R₁(14943.0 cm⁻¹) and R₂(14945.0 cm⁻¹) absorption lines in TlCr-alum was studied in magnetic fields up to 27 kOe at liq. He temperature. The R₁ and R₂ lines are ascribed to the magnetic dipole transitions from ⁴A₂ ground state to \barE and 2\barA excited states of ²E, respectively. The Agreement between the experimental and the predicted Zeeman patterns is quite good. The angular dependence of g-values of the excited states is explained by using the effective Hamiltonian, however, it is difficult to give a consistent explanation of the g-values in terms of the perturbation expression which are currently available.
Paschen-Back effects of the R lines was observed in pulsed magnetic fields up to 220 kOe at 77°K. These patterns are interpreted consistently in terms of the above assignment.