Publications [#247351] of Berndt Mueller

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Papers Published
  1. Müller, B; Rafelski, J; Greiner, W, Auto-ionization of positrons in heavy ion collisions, The European Physical Journal A - Hadrons and Nuclei, vol. 257 no. 3 (1972), pp. 183-211 [doi] .

    Abstract:
    Autoionization of positrons occurs as a fundamentally new process of quantum electrodynamics, if empty 1 s- or 2 p1/2- etc. electronic shells obtain binding energies larger than 2 mec2. This effect should be experimentally observable in the scattering of very heavy ions (Z≧80) on each other since in such collisions superheavy electronic molecules are formed (superheavy quasi-molecules). The scattering mechanism and the distribution of autoionization positrons are discussed. The adiabaticity of the heavy ion collision is studied and the electron-positron pair production background to the ionization problem is estimated. Analytic solutions are obtained for 1/r-potentials for the case Zα≧1. The phase shifts of negative energy solutions in the case of cutoff Coulomb potentials reveal the accuracy of the autoionization formalism. © 1972 Springer-Verlag.