Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Th. Freudenberg"'
Autor:
C. Dedonder-Lardeux, Th. Freudenberg, V. Stert, Ingolf V. Hertel, W. Radloff, D. Solgadi, Christophe Jouvet
Publikováno v:
Chemical Physics Letters. 281:20-26
Photoelectron spectra of benzene molecules and dimers excited to the S2 electronic state by 140 fs laser pulses at a wavelength of 200 nm have been measured by combining the pump–probe technique with the coincidence detection of ions and electrons.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::67504728c8f7ab1b144c4ffa43012b4f
https://doi.org/10.1016/s0009-2614(97)01142-1
https://doi.org/10.1016/s0009-2614(97)01142-1
Autor:
Th. Freudenberg, Christophe Jouvet, Ingolf V. Hertel, C. Dedonder-Lardeux, W. Radloff, V. Stert, Frank Noack, D. Solgadi
Publikováno v:
Europhysics Letters (EPL). 40:515-520
The first femtosecond pump-probe photoelectron spectroscopy experiment for neutral clusters is reported. The A state of ammonia molecules and clusters is excited with 120 fs pulses at 200 nm and probed by ionisation at 267 or 400 nm. Ions and electro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e55d5e266db2ae3e766a65974e18723a
https://doi.org/10.1209/epl/i1997-00497-y
https://doi.org/10.1209/epl/i1997-00497-y
Publikováno v:
Zeitschrift f�r Physik D Atoms, Molecules and Clusters. 41:267-273
The dynamics of ammonia clusters excited to the A state with 160 fs laser pulses of 6.2 eV was studied by pump-probe experiments with a low probe photon energy of 3.1 eV. Protonated as well as unprotonated cluster ion signals have been observed. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4e1fef79d5b811d03e6ce0f76ee356c
https://doi.org/10.1007/s004600050322
https://doi.org/10.1007/s004600050322
Publikováno v:
Chemical Physics Letters. 269:523-529
Ultrashort 155 nm pulses are used to study the dynamics of ammonia clusters excited to vibronic levels of the B and C ′ state. For the monomer unexpectedly long lifetimes of about 8 ps for NH3 and 65 ps for ND3 have been found while the clusters de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26f3e470236966c683f7f6d632684101
https://doi.org/10.1016/s0009-2614(97)00312-6
https://doi.org/10.1016/s0009-2614(97)00312-6
Publikováno v:
Zeitschrift f�r Physik D Atoms, Molecules and Clusters. 39:217-223
Applying the 2CR2PI method we have obtained novel information about the spectral structures of the heterodimers C6H6 · NH3 and C6H6 · ND3 near the S1 state of benzene. For the first time the ionization threshold and the dissociation energy of the h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10da6961ef5bf979219602ad2dcba685
https://doi.org/10.1007/s004600050131
https://doi.org/10.1007/s004600050131
Publikováno v:
Chemical Physics Letters. 264:210-214
The size dependence of the internal conversion efficiency for the optically excited electronic S 2 -state in benzene(NH 3 ) n clusters has been studied. The analysis of pump-probe experiments with 160 fs laser pulses reveals a significant enhancement
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ec41f1f12a75b4ce43d1361b2dd6bce
https://doi.org/10.1016/s0009-2614(96)01308-5
https://doi.org/10.1016/s0009-2614(96)01308-5
Publikováno v:
Chemical Physics Letters. 261:301-306
The lifetime of the benzene dimer in the S 2 state has been determined directly by pump-probe measurements with 160 fs laser pulses. The value of ≈ 40 fs obtained characterises the fast internal conversion to the S 0 as well as to the S 1 state. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3cc3cf90ad4bd35eb8063d0dd2363073
https://doi.org/10.1016/0009-2614(96)00972-4
https://doi.org/10.1016/0009-2614(96)00972-4
Publikováno v:
Zeitschrift f�r Physik D Atoms, Molecules and Clusters. 36:349-364
The formation of protonated and unprotonated ammonia cluster ions is studied by femtosecond two colour two photon pump-probe techniques applied to (NH3) n and (ND3) n clusters withn up to 8. The fourth harmonic (∼ 200 nm, 6.2 eV, 160 fs) of a Ti: S
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ee53443cbdf98ebb62fde07a018080f
https://doi.org/10.1007/bf01426421
https://doi.org/10.1007/bf01426421
Publikováno v:
Chemical Physics Letters. 258:507-512
The dynamics of intracluster fragmentation in highly excited benzene(NH 3 ) n heteroclusters has been studied and compared with the ultrafast process of internal conversion. In pump-probe experiments with 170 fs laser pulses the clusters were excited
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64fd0da2c6c38a981a32130daeb38337
https://doi.org/10.1016/0009-2614(96)00659-8
https://doi.org/10.1016/0009-2614(96)00659-8
Publikováno v:
Surface Review and Letters. :177-181
We report on results of ionization and fragmentation studies of small silver-ammonia heteroclusters. By comparison of the experimental results with ab-initio calculations we have obtained first information about the structure and binding energies of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::80bf4fa50138cd5377d81087ce34a36f
https://doi.org/10.1142/s0218625x96000358
https://doi.org/10.1142/s0218625x96000358