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arXiv · 1112.1891

Critical nucleus charge in a superstrong magnetic field: effect of screening

S. I. Godunov·B. Machet·M. I. Vysotsky
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Abstract

A superstrong magnetic field stimulates the spontaneous production of positrons by naked nuclei by diminishing the value of the critical charge Z_{cr} . The phenomenon of screening of the Coulomb potential by a superstrong magnetic field which has been discovered recently acts in the opposite direction and prevents the nuclei with Z<52 from becoming critical. For Z>52 for a nucleus to become critical stronger B are needed than without taking screening into account.

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S. I. Godunov, B. Machet, M. I. Vysotsky. 2012-02-07. Critical nucleus charge in a superstrong magnetic field: effect of screening. https://doi.org/10.1103/physrevd.85.044058

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