Calculation of the two-photon decay rates of hydrogen-like ions by using B-polynomials

Details Calculation of the two-photon decay rates of hydrogen-like ions by using B-polynomials Calculation of the two-photon decay rates of hydrogen-like ions by using B-polynomials

2011-04-25

arxiv.org/abs/1104.4818v1

Physics

Mathematical Physics

Scientific paper

A new approach is laid out to investigate the two photon atomic transitions. It is based on application of the finite basis solutions constructed from the Bernstein Polynomial (B-Polynomial) sets. We show that such an approach provides a very promising route for the relativistic second- (and even higher-order) calculations since it allows for analytical evaluation of the involved matrices elements. In order to illustrate possible applications of the method and to verify its accuracy, detailed calculations are performed for the 2s_{1/2}-1s_{1/2} transition in neutral hydrogen and hydrogen-like ions, and are compared with the theoretical predictions based on the well-established B-spline-basis-set approach.

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