Physics
Scientific paper
Jul 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011phrva..84a3406e&link_type=abstract
Physical Review A, vol. 84, Issue 1, id. 013406
Physics
1
Photoionization Of Atoms And Ions, Inner-Shell Excitation And Ionization, Oscillator Strengths, Lifetimes, Transition Moments, Atomic Processes And Interactions
Scientific paper
Absolute single photoionization cross-section measurements for Se+ ions were performed at the Advanced Light Source (ALS) at Lawrence Berkeley National Laboratory using the photo-ion merged-beams technique. Measurements were made at a photon energy resolution of 5.5 meV from 17.75 to 21.85 eV spanning the 4s24p3 4S3/2o ground-state ionization threshold and the 2P3/2o,2P1/2o,2D5/2o, and2D3/2o metastable state thresholds. Extensive analysis of the complex resonant structure in this region identified numerous Rydberg series of resonances and obtained the Se2+ 4s24p23P2 and 4s24p21S0 state energies. In addition, particular attention was given to removing significant effects in the measurements due to a small percentage of higher-order undulator radiation.
Aguilar Alejandro
Bilodeau R. C.
David Kilcoyne A. L.
Esteves David Anthony
Phaneuf Ronald A.
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