Double K-shell Photoionization of Ne
ORAL
Abstract
Single photon double K-shell photoionization of Ne has been studied experimentally and theoretically over the energy range of 2.3 – 8.5 keV. In particular, the KK/K photoionization ratios have been determined. The experimental cross sections were obtained via measurements of hypersatellite x-ray emission and the theoretical cross sections were calculated using the R-matrix with pseudostates (RMPS) method for Ne8+. Agreement between experiment and theory was quite good, indicating that the 8 outer-shell electrons of the Ne atom do not play an important role in double K-shell ionization, although small discrepancies are noted. Scaling of the ratio with Z is also investigated.
*This work was supported by the UD Department of Energy, Office of Science, Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Division. The experiments were conducted in part at the GALAXIES beam line of the synchrotron radiation facility SOLEIL, France (project no. 99190144). This research used resources of the Advan, a US Department of energy (DOE) office os Science ced Photon Source User Facility operated for the DOE Office of Science by Argonnne National Laboratory under Contract No. DE-AC02-06CH11357. TWG was supported in part by NASA APRA grants.
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Presenters
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Thomas W Gorczyca
- Western Michigan University