Phys. Rev. Lett. 82, 2488–2491 (1999)Interferometric Line Shape Modulation in Alkali-Halide PhotoabsorptionReceived 4 May 1998; published in the issue dated 22 March 1999 An ab initio calculation of the photoabsorption spectrum of ground state LiF below the ionic Li++F- threshold predicts a periodic modulation of the predissociation line shapes. Specifically, we predict a periodic reversal of Fano's line shape asymmetry parameter q. In this case, reversal of the q parameter occurs because of the interference of vibrational wave functions propagating alternatively along diabatic and adiabatic potentials. The interference modulates the predissociation spectrum giving rise to both extremely long-lived resonances and broad window resonances. These anomalous resonances occur periodically on an energy scale greater than the Rydberg energy spacing and are finite in number. © 1999 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.82.2488
DOI:
10.1103/PhysRevLett.82.2488
PACS:
33.20.-t, 34.50.-s, 34.60.+z
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.