DiracR-matrix calculations of photoionization cross-sections of Ni xiii

Absolute photoionization cross sections of atomic oxygen.

The abso lu t e va lues of t h e pho to ion iza t ion c r o s s s e c t i o n s of a tomic oxygen have been measured from t h e i o n i z a t i o n th reshold t o 120 1. An au to ion iz ing resonance belonging t o t h e 2 ~ 2 ~ ~ ( 4 ~ )3p( DO, 3s0, 3p0) t r a n s i t i o n h a s been observed a t 479.43 1 and another l i n e a t 389.97 1. The experimental d a t a is i n e x c e l l e n t agree...

The Calculation of Photoionization Cross Sections

Relativistic photoionization cross sections for C II

High resolution measurements of photoionization cross sections for atomic ions are now being made on synchrotron radiation sources. The recent measurements by Kjeldsen etal. (1999) showed good agreement between the observed resonance features and the the theoretical calculations in the close coupling approximation (Nahar 1995). However, there were several observed resonances that were missing i...

ELECTRON-ION RECOMBINATION RATE COEFFICIENTS AND PHOTOIONIZATION CROSS SECTIONS FOR ASTROPHYSICALLY ABUNDANT ELEMENTS VI. Ni II

We present the first detailed ab initio quantum mechanical calculations for total and state-specific recombination rate coefficients for e + Ni III → Ni II. These rates are obtained using a unified treatment for total electron-ion recombination that treats the nonresonant radiative recombination and the resonant dielectronic recombination in a self-consistent unified manner in the close couplin...

Total molecular photoionization cross-sections by algebraic diagrammatic construction-Stieltjes-Lanczos method: benchmark calculations.

In [K. Gokhberg, V. Vysotskiy, L. S. Cederbaum, L. Storchi, F. Tarantelli, and V. Averbukh, J. Chem. Phys. 130, 064104 (2009)] we introduced a new L(2) ab initio method for the calculation of total molecular photoionization cross-sections. The method is based on the ab initio description of discretized photoionized molecular states within the many-electron Green's function approach, known as al...