Valence-shell single photoionization of Kr+ions: Experiment and theory

Abstract

Photoionization of Kr+ ions was studied in the energy range from 23.3 eV to 39.0 eV at a photon energy resolution of 7.5 meV. Absolute measurements were performed by merging beams of Kr + ions and of monochromatized synchrotron undulator radiation. Photoionization (PI) of this Br-like ion is characterized by multiple Rydberg series of autoionizing resonances superimposed on a direct photoionization continuum. Resonance features observed in the experimental spectra are spectroscopically assigned and their energies and quantum defects tabulated. The high-resolution cross-section measurements are benchmarked against state-of-the-art theoretical cross-section calculations from the Dirac-Coulomb R-matrix method [1].

Photoionization of the3s23p43Pand the3s2Barthel1, Flesch2, Rühl3 et al. 2015Phys. Rev. A201200View full textAdd to dashboardCite

“…We note that our work is of prime interest to astrophysics as outlined in the Introduction. High quality photoionization cross section calculations have been made on several complex systems (Fe-peak elements and Mid-Z atoms) of prime interest to astrophysics and plasma applications, indicating suitable agreement with high resolution measurements made at leading synchrotron light sources [57,58,[60][61][62].…”

K-shell photoionization of Be-like boron (B+) ions: experiment and theory

“…For handling all these requirements the state-of-the-art R-matrix method [65,66] was employed in the present study. The experimental techniques were the same as those used in the most recent experimental work at the ALS in PI studies on Be-like ions [67], multiply charged iron ions [68], singly charged argon [69] and singly charged krypton [70] ions.…”

Petascale Computations for Large-Scale Atomic and Molecular Collisions

“…It is clearly see from Fig. 3 [7] spectra obtained in the ALS measurements over the photon energy range investigated [10].…”