Photodetachment of K-

Chien-Nan Liu
Kansas State University

Eigenchannel R-matrix calculation results are presented for the photodetachment of K- in the energy region between the K(5s) and K(7p) thresholds. Present results are compared with prior theoretical and experimental studies, including the recent relative K(5s) partial cross section measurements of Kiyan et al.1, and resonances observed in electron-potassium scattering. Detailed analyses and identifications of 1P0 resonance structures are presented. Comparisons with H- and other alkali negative ions provide further information on the structure and dynamics of these systems. The induced dipole potential model proposed to describe resonance positions2 and widths3 are also discussed.


1) I. Yu. Kiyan, U. Berzinsh, J. Sandström, D. Hanstorp, and D. J. Pegg, Phys. Rev. Lett. 81, 2874 (2000).
2) I. Yu. Kiyan, U. Berzinsh, D. Hanstorp and D. J. Pegg, Phys. Rev. Lett. 81, 2874 (1998).
3) I. Yu. Kiyan, Phys. Rev. Lett. 84, 5975 (2000).

This work was supported by the Chemical Sciences, Geosciences and Biosciences Division,
Office of Basic Energy Sciences, Office of Science, U.S. Department of Energy.

Submitted to DAMOP/DAMP, May 2001 in London, Ontario.

This abstract is also available in Postscript or Adobe Acrobat formats.

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