Experimental Photoionization Cross-Section Measurements in the Ground and Metastable State Threshold Region of Se +

@article{Sterling2011ExperimentalPC,
  title={Experimental Photoionization Cross-Section Measurements in the Ground and Metastable State Threshold Region of Se +},
  author={N. C. Sterling and D. A. Esteves and Ren{\'e} C. Bilodeau and A. L. David Kilcoyne and Eddie C. Red and Ronald A. Phaneuf and A. Aguilar Michigan State University and University of Nevada and Ren{\`o} and Advanced Light SourceLBNL and Western Michigan University},
  journal={Journal of Physics B},
  year={2011},
  volume={44},
  pages={025701}
}
Absolute photoionization cross-section measurements are reported for Se+ in the photon energy range 18.0–31.0 eV, which spans the ionization thresholds of the 4S3/2 ground state and the low-lying 2P3/2, 1/2 and 2D5/2, 3/2 metastable states. The measurements were performed using the Advanced Light Source synchrotron radiation facility. Strong photoexcitation–autoionization resonances due to 4p → nd transitions are seen in the cross-section spectrum and identified with a quantum-defect analysis. 

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