Exploring the enhancement of radiative recombination through field-induced recombination

The enhancement of electron-ion radiative-recombination rates at low energies remains an open issue, particularly following the proposal of field-induced recombination (FIR) as a potential mechanism and the corresponding calculations by H\"orndl et al. [Phys. Rev. A 74, 052712 (2006) ]. We present a refined model for FIR and radiative stabilization, incorporating a two-step cascade process. Our simulations determine the bound-state distribution $P(n,l)$, revealing a turning point at low principal quantum numbers that underscores the limitations of previous extrapolations. Furthermore, we show that in regions with high n and low l, $P(n,l)$ exceeds the statistical approximation, P(n,l)=P(n)2l+1n², due to the influence of a magnetic field. With an expanded sample size of at least 1×10¹¹ trajectories, our model accurately estimates recombination rates for bare ions, including He²⁺, N⁷⁺, C⁶⁺, Ne¹⁰⁺, Si¹⁴⁺, and Cl¹⁷⁺, achieving excellent agreement with experimental data.