| Popis: |
The effect on the dielectronic recombination cross section of electric-field-induced mixing of high Rydberg-state (HRS) levels is determined, for both ${\mathrm{Mg}}^{1+}$ and ${\mathrm{Ca}}^{1+}$ target ions. After diagonalizing the energy matrix, ${\ensuremath{\sigma}}_{n}^{\mathrm{DR}}$ is calculated in the isolated resonance approximation as a function of n, the principal quantum number of the HRS electron. From this result, both the total cross section, ${\ensuremath{\sigma}}^{\mathrm{DR}\mathrm{\ensuremath{\equiv}}{\mathcal{J}}_{{n}_{\mathrm{}}{\ensuremath{\sigma}}_{n}^{\mathrm{DR}}}}$, and the total cross section integrated over energy, ${\ensuremath{\Omega}}^{\mathrm{DR}}$\ensuremath{\equiv}F ${\mathrm{de}}_{c}$ ${\ensuremath{\sigma}}^{\mathrm{DR}}$, are obtained. The agreement between theory and experiment for ${\ensuremath{\Omega}}^{\mathrm{DR}}$ is very good in the case of ${\mathrm{Mg}}^{1+}$, while roughly a factor of 2 discrepancy still exists for ${\mathrm{Ca}}^{1+}$. |
