Mirroring doubly excited resonances in argon.

Canton, S. E.; Wills, A. A.; Gorczyca, T. W.; Wiedenhoeft, M.; Nayandin, O.; Liu, C. N.; Berrah, N.

doi:10.1103/PhysRevLett.85.3113

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Mirroring doubly excited resonances in argon.

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Canton, S. E.
Research Group of Structural Dynamics of (Bio)Chemical Systems, MPI for Biophysical Chemistry, Max Planck Society;

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Canton, S. E., Wills, A. A., Gorczyca, T. W., Wiedenhoeft, M., Nayandin, O., Liu, C. N., et al. (2000). Mirroring doubly excited resonances in argon. Physical Review Letters, 85(15): 3113. doi:10.1103/PhysRevLett.85.3113.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-88DE-0

Abstract

New features are revealed in the low-energy photoionization spectrum of Ar by critically combining high photon resolution and differential photoelectron spectroscopic techniques. Two LS-forbidden doubly excited resonances are seen in the 3p−13/2,1/2 partial cross sections which exhibit mirroring profiles, resulting in complete cancellation in the total photoionization cross section, as was predicted by Liu and Starace [Phys. Rev. A 59, R1731 (1999)]. These results demonstrate that a new class of weakly spin-orbit induced, mirroring resonances should be observable in partial, but not in total, collisional cross sections involving atoms, molecules, and solids in general.