Abstract
The literature contains several analytic or semianalytic formulas that can be used to calculate various decay rates of the relativistic hydrogenic atom. To date, all of these formulas depend on two-component atomic wavefunctions. In this paper we derive the necessary working formulas needed to evaluate the decay rate for M1, E1, E2 or M2 transitions with a four-component wavefunction. We also show that both methods yield identical results.
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Acknowledgements
We want to thank Drs. Silvia Sutanto and Brian Robson for several generous communications that helped us understand their work. Our deepest appreciation goes to Professor Ian Grant for graciously answering innumerable questions about relativistic decay rates.
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Gonzalez, G., Alexander, S.A. & Coldwell, R.L. Relativistic decay rates of one-electron atoms. J Math Chem 61, 193–218 (2023). https://doi.org/10.1007/s10910-022-01406-y
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DOI: https://doi.org/10.1007/s10910-022-01406-y