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Coherent Excitation and Relaxation of the Coupled S 1 /S 2 Electronic States of Naphthalene
Author(s) -
Montero Raúl,
Conde Álvaro Peralta,
Longarte Asier,
Castaño Fernando
Publication year - 2010
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201000718
Subject(s) - excited state , excitation , relaxation (psychology) , adiabatic process , femtosecond , ionization , population , resonance (particle physics) , atomic physics , chemistry , electronic structure , physics , quantum mechanics , computational chemistry , laser , psychology , social psychology , ion , demography , sociology
Femtosecond time‐resolved ionization reveals the coherent nature of the electronic excitation and relaxation of the S 1 (L b ) and S 2 (L a ) excited states of naphthalene (see picture). The authors describe two different types of coherent behavior: adiabatic evolution, resulting in the transient population of the S 2 state excited out of resonance, and electronic recurrences, observed in the relaxation of this resonantly populated state as a consequence of the strong S 2 /S 1 nonadiabatic coupling.