Nuclear Fusion Enhancement by Heavy Nuclear Catalysts

Abstract

We seek to understand the effect of high electron density in the proximity of a heavy nucleus on the fusion reaction rates in a hot plasma phase. We investigate quantitatively the catalytic effect of gold ($Z=79$) ions embedded in an electron plasma created due to plasmonic focusing of high-intensity short laser pulses. Using self-consistent strong plasma screening, we find highly significant changes in the internuclear potential of light elements present nearby. For gold, we see a $14$keV change in the internuclear potential near the nuclear surface, independent of the long-distance thermal Debye-Hückel screening. The dense polarization cloud of electrons around the gold catalyst leads to a $\sim 1.5$ enhancement of proton-boron (${}^{11}$B) fusion above $T=100$keV.

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