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/ΔE ≈ 7000 was achieved with the photon energy from 388 to 430 eV scanned with a band pass of 300 meV, and the 399.4-402 eV range with 60 meV. Experimental results are compared with theoretical predictions made from the multi-configuration Dirac-Fock and R-matrix methods. The interplay between experiment and theory enabled the identification and characterization of the strong 1s → 2p resonances observed in the spectra.
- Publication:
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Journal of Physics B Atomic Molecular Physics
- Pub Date:
- September 2011
- DOI:
- 10.1088/0953-4075/44/17/175208
- arXiv:
- arXiv:1203.4256
- Bibcode:
- 2011JPhB...44q5208G
- Keywords:
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- Astrophysics - Earth and Planetary Astrophysics;
- Physics - Atomic Physics
- E-Print:
- 7 pages, 3 figures, 2 tables