Francis Perrin

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In this overview, femtosecond fluorescence studies of various DNA constituents are presented, ranging from the monomeric chromophores to different model helices. In order to interpret the experimental results in terms of fundamental processes on the molecular scale they are discussed in the light of recent theoretical calculations. The ultrafast(More)
M. Pinault, M. Mayne-L’Hermite, B. Bouchet-Fabre, C. Reynaud, V. Pichot, P. Launois, J.N. Rouzaud, C. Clinard, D. Ballutaud. Laboratoire Francis Perrin (CNRS URA 2453) CEA Saclay DSM-DRECAM-SPAM, Bat. 522, 91191 Gif sur Yvette Cedex, France Laboratoire de Physique des Solides (UMR CNRS 8502), bat. 510, Université Paris Sud, 91405 Orsay cedex, France CRMD,(More)
We report experimental and theoretical evidence of a non-Rydberg molecular doubly excited state of Ca2 involving excited molecular orbitals mixing 4p and 3d characters. The excitation spectrum of Ca2, carried by helium or argon clusters, is recorded experimentally in the range 25600-27800 cm, displaying a bimodal structure. The latter is interpreted from ab(More)
A femtosecond pump (266 nm)-probe (800 nm) experiment as been performed on small clusters of tetrakis(dimethylamino)ethylene (TDMAE) with argon (TDMAE(Ar)≪10). The pump excites TDMAE and initiates deformations of the molecule within the cluster. Then, the probe ionises TDMAE and disposes enough excess energy in the cluster to evaporate all argon atoms.(More)