K-Shell Photoionization of Singly Ionized Atomic Nitrogen: Experiment and Theory

Abstract

Absolute cross sections for the K-shell photoionization of C-like nitrogen ions were measured by employing the ion-photon merged-beam technique at the SOLEIL synchrotron radiation facility in Saint-Aubin, France. High-resolution spectroscopy with E/$\Delta$E $\approx$ 7,000 was achieved with the photon energy from 388 to 430 eV scanned with a band pass of 300 meV, and the 399.4 to 402 eV range with 60 meV. Experimental results are compared with theoretical predictions made from the multi-configuration Dirac-Fock (MCDF) and R-matrix methods. The interplay between experiment and theory enabled the identification and characterization of the strong 1s $\to$ 2p resonances observed in the spectra.

7 pages, 3 figures, 2 tables

References in corpus (2)

• K-shell photoionization of ground-state Li-like carbon ions [C${}^{3+}$]: experiment, theory and comparison with time-reversed photorecombination
• K-shell photoionization of ground-state Li-like boron ions [B${}^{2+}$]: Experiment and Theory

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