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Titolo:
Classically forbidden recurrences in the photoabsorption spectrum of lithium - art. no. 043409
Autore:
Kondratovich, V; Delos, JB; Spellmeyer, N; Kleppner, D;
Indirizzi:
Coll William & Mary, Dept Phys, Williamsburg, VA 23187 USA Coll William & Mary Williamsburg VA USA 23187 Williamsburg, VA 23187 USA MIT, George R Harrison Spect Lab, Elect Res Lab, Cambridge, MA 02139 USA MIT Cambridge MA USA 02139 ct Lab, Elect Res Lab, Cambridge, MA 02139 USA MIT, Dept Phys, Cambridge, MA 02139 USA MIT Cambridge MA USA 02139MIT, Dept Phys, Cambridge, MA 02139 USA
Titolo Testata:
PHYSICAL REVIEW A
fascicolo: 4, volume: 6204, anno: 2000,
pagine: 3409 -
SICI:
1050-2947(200010)6204:4<3409:CFRITP>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHOTODETACHMENT CROSS-SECTION; CALCULATED ELECTRON DYNAMICS; SEMICLASSICAL FORMULA; OSCILLATOR-STRENGTHS; QUANTUM SPECTRA; MAGNETIC-FIELD; ATOMIC SPECTRA; SPECTROSCOPY; IONIZATION; ORBITS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Kondratovich, V Coll William & Mary, Dept Phys, Williamsburg, VA 23187 USAColl William & Mary Williamsburg VA USA 23187 A 23187 USA
Citazione:
V. Kondratovich et al., "Classically forbidden recurrences in the photoabsorption spectrum of lithium - art. no. 043409", PHYS REV A, 6204(4), 2000, pp. 3409

Abstract

We present data on the photoabsorption spectrum of lithium atoms in an electric field at energies between the saddle point of the Stark potential andbelow the field-free ionization threshold. The spectrum displays a sequence of sharp resonances and a sequence of broad ones. We find that the broad resonances arise from the classically forbidden reflection of waves above adynamical potential barrier. The recurrence spectrum is also observed and it is dramatically affected by above-barrier reflections. We have developeda semiclassical theory that interprets the spectra using quasiclassical trajectories that undergo above-barrier reflection.

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Documento generato il 23/09/20 alle ore 12:07:32