Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
ULTRAFAST EXCITATION PROCESS IN NANH3 - A COMBINED THEORETICAL AND EXPERIMENTAL-ANALYSIS
Autore:
DEVIVIERIEDLE R; SCHULZ S; HOHNDORF J; SCHULZ CP;
Indirizzi:
MAX PLANCK INST QUANTUM OPT D-85740 GARCHING GERMANY FREE UNIV BERLIN,INST PHYS & THEORET CHEM D-14195 BERLIN GERMANY MAX BORN INST NICHTLINEARE OPT & KURZZEITSPEKTROS D-12489 BERLIN GERMANY
Titolo Testata:
Chemical physics
fascicolo: 1-3, volume: 225, anno: 1997,
pagine: 299 - 308
SICI:
0301-0104(1997)225:1-3<299:UEPIN->2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
DEPENDENT SCHRODINGER-EQUATION; FEMTOSECOND TEMPORAL SPECTROSCOPY; COHERENT VIBRATIONAL MOTION; FOURIER METHOD SOLUTION; MULTIPHOTON IONIZATION; MOLECULAR-DYNAMICS; IMPULSIVE EXCITATION; AMMONIA CLUSTERS; QUASI-CONTINUUM; LASER-PULSES;
Tipo documento:
Article
Natura:
Periodico
Citazioni:
43
Recensione:
Indirizzi per estratti:
Citazione:
R. Devivieriedle et al., "ULTRAFAST EXCITATION PROCESS IN NANH3 - A COMBINED THEORETICAL AND EXPERIMENTAL-ANALYSIS", Chemical physics, 225(1-3), 1997, pp. 299-308

Abstract

The conditions for spectroscopic studies of fast decaying excited states with femtosecond laser pulses are examined both experimentally andby quantum dynamical calculations. The sodium-ammonia complex (NaNH3)acts as a model system which can be treated in quantum chemical calculations and is of chemical relevance for metal-molecular interaction in polar liquids. The state selective dynamics is studied in a two colour pump-probe experiment. The fundamental wavelength of a Ti:sapphire generated femtosecond laser pulse excites the NaNH3 complex and the second harmonic is used for ionization. The calculations performed on abinitio potential energy and transition dipole moment surfaces show that for laser intensities with a Rabi cycle less than pi the pump-probeprocess is a pure two-photon ionization process. Under these conditions the observed ion signal reflects directly the population of the excited state and the observed wavelength dependence resembles the vibrational spectrum of the NaNH3 complex. (C) 1997 Elsevier Science B.V.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/11/20 alle ore 04:49:56