Abstract
U-U collisions at energies near the Coulomb barrier are discussed. A quantum mechanical treatment of nuclear motion including the influence of quasibound states in a pocket of the scattering potential is developed. Positron emission probabilities are calculated exhibiting a sharp line due to the decay of a hole in the supercritical 1s-state. In addition conversion processes and multiple pockets in the potential creating sidebands in the spectrum are computed.
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References
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We are grateful to H. Bokemeyer, D. Schwalm, P. Kienle, C. Kozhuharov, and coworkers for communicating many details and results of their experiments prior to publication. We would also like to thank T. de Reus and G. Soff for fruitful discussions about various aspects of our work.