A reexamination of the spin-rotation constant for 2Π states: The A-X band system of HCl+

摘要: Abstract Using the line positions measured by Sheasley and Mathews, we have reanalyzed A 2 Σ + -X Π emission spectrum of H 35 Cl , 37 D employing Hamiltonians “direct approach” described Zare, Schmeltekopf, Harrop, Albritton. The new values for molecular constants now show expected isotope relations. Attention is concentrated on centrifugal distortion correction to spin-orbit splitting, spin-rotation constant, γ, state. Fixing calculated using an algorithm Coxon, a value γ derived. This compares poorly from approximation suggested Van Vleck. source this discrepancy be inadequacy Vleck constant and/or fact that experimentally derived is, in general, only effective parameter containing both “true” interaction pseudo-spin-rotation interactions caused electronic perturbations, such as simultaneous with − states or Δ other Λ ≠ 0 different multiplicity.