Influence of tunneling on electron screening in low energy nuclear reactions in laboratories

Details Influence of tunneling on electron screening in low energy nuclear reactions in laboratories Influence of tunneling on electron screening in low energy nuclear reactions in laboratories

2002-11-26

arxiv.org/abs/nucl-th/0211080v2

Phys.Rev. C67 (2003) 022801

Physics

Nuclear Physics

Nuclear Theory

3 figures

Scientific paper

10.1103/PhysRevC.67.022801

Using a semiclassical mean field theory, we show that the screening potential exhibits a characteristic radial variation in the tunneling region in sharp contrast to the assumption of the constant shift in all previous works. Also, we show that the explicit treatment of the tunneling region gives a larger screening energy than that in the conventional approach, which studies the time evolution only in the classical region and estimates the screening energy from the screening potential at the external classical turning point. This modification becomes important if the electronic state is not a single adiabatic state at the external turning point either by pre-tunneling transitions of the electronic state or by the symmetry of the system even if there is no essential change with the electronic state in the tunneling region.

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