Effect of Interacting Resonances on Dielectronic Recombination in Static Fields
نویسندگان
چکیده
We find that the static field enhancement of dielectronic recombination may be strongly reduced by the interaction between resonances through common continua. The interaction effect is not limited to a few resonances but extends over whole n manifolds, thus it can significantly reduce the field enhancement of the total recombination rate. The standard lowest order theory is recast using a complex Hamiltonian to include higher order terms usually identified with interaction through common continua. We present calculations for C31 and Si111 using both time independent and time dependent configuration average methods. [S0031-9007(98)05346-0]
منابع مشابه
Intermediate-coupling calculations of the effects of interacting resonances on dielectronic recombination in a static electric field
Recently, we demonstrated that the enhancement of dielectronic recombination by an electric field, or crossed electric and magnetic fields, may be reduced by the interaction between resonances through a common continuum @Phys. Rev. Lett. 80, 1402 ~1998!#. However, these calculations were carried out in a configurationaverage ~CA! approximation and the question then remained as to how these pred...
متن کاملDielectronic satellite spectra of heliumlike iron and nickel from the unified recombination method
It is shown that resonances in the unified recombination cross sections correspond directly to dielectronic satellite spectra. Positions, intensities, and profiles of satellite lines may be obtained accurately using the Breit-Pauli R-matrix method and the unified theory of total electron-ion recombination. The intrinsic dielectronic resonance strength corresponding to autoionizing resonances is...
متن کاملExperimental N v and Ne viii low - temperature dielectronic recombination rate coefficients
The dielectronic recombination rate coefficients of N v and Ne viii ions have been measured at a heavy-ion storage ring. The investigated energy ranges covered all dielectronic recombination resonances attached to 2s → 2p (∆n = 0) core excitations. The rate coefficients in a plasma are derived and parameterized by using a convenient fit formula. The experimentally derived rate coefficients are ...
متن کاملEnhanced Dielectronic Recombination in Crossed Electric and Magnetic Fields
The dependence of the dielectronic reconbination (DR) cross section on crossed electric and magnetic fields is described. The enhancement of this cross section due to a static electric field is further increased when a magnetic field is added perpendicular to the electric field. Calculation of this field induced enhancement is presented for a realistic atomic model and the mechanism for the enh...
متن کاملFe15+ dielectronic recombination and the effects of configuration interaction between resonances with different captured electron principal quantum numbers
Dielectronic recombination (DR) of Na-like Fe15+ forming Mg-like Fe14+ via excitation of a 2l core electron has been investigated. We find that configuration interaction (CI) between DR resonances with different captured electron principal quantum numbers n can lead to a significant reduction in resonance strengths for n 5. Previous theoretical work for this system has not considered this form ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1998