Iterative procedure for determining high-order corrections to the vibration-rotation spectra of diatomic molecules

The one-dimensional Schrödinger equation is reduced to a system of algebraic equations on the basis of the complex WKB method. As a result, recursion relations are obtained for the numerical calculation of high-order corrections to the vibration-rotation spectra of diatomic molecules. Various nonpolynomial representations of the potential are investigated.V. V. Kuibyshev State University, Tomsk. Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 6, pp. 9–16, June, 1994.