Titre :

Acetic acid electronic state spectroscopy by high-resolution vacuum ultraviolet photo-absorption, electron impact, He(I) photoelectron spectroscopy and ab initio calculations

Auteur(s) :

Limão-Vieira, P. [Auteur]
Centro de Física e Investigação Tecnológica [Lisboa] [CEFITEC]
Giuliani, A. [Auteur]
Institut de Chimie des Substances Naturelles [ICSN]
Delwiche, J. [Auteur]
Parafita, R. [Auteur]
Centro de Física e Investigação Tecnológica [Lisboa] [CEFITEC]
Mota, R. [Auteur]
Centro de Física e Investigação Tecnológica [Lisboa] [CEFITEC]
Duflot, D. [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Flament, J.-P. [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Drage, E. [Auteur]
Cahillane, P. [Auteur]
Mason, N. J. [Auteur]
Hoffmann, S. V. [Auteur]
Hubin-Franskin, M.-J. [Auteur]

Titre de la revue :

Chemical Physics

Pagination :

339-349

Éditeur :

Elsevier

Date de publication :

2006-05

ISSN :

0301-0104

Mot(s)-clé(s) :

vuv spectrsocopy
synchrotron radiation
ionisation
radiation damage
photoabsorption

Mot(s)-clé(s) en anglais :

electronic and vibrational excitation

Discipline(s) HAL :

Physique [physics]/Physique [physics]/Chimie-Physique [physics.chem-ph]

Résumé en anglais : [en]

Electronic state spectroscopy of CH 3COOH has been investigated using Vacuum UltraViolet (VUV) photo-absorption spectroscopy in the energy range 3.5-10.6 eV. The availability of a high-resolution photon beam (˜0.075 nm) ...
Lire la suite >Electronic state spectroscopy of CH 3COOH has been investigated using Vacuum UltraViolet (VUV) photo-absorption spectroscopy in the energy range 3.5-10.6 eV. The availability of a high-resolution photon beam (˜0.075 nm) has allowed detailed analysis of the vibrational progressions and allowed us to propose, for the first time, new assignments for several Rydberg series. Excited states located in the 10-14 eV region have been studied for the first time. The VUV photo-absorption spectrum is compared with the electron energy loss spectrum (EELS) recorded in dipolar transition mode (100 eV incident energy, ˜0° scattering angle) in the 5.0-14 eV energy loss range. A He(I) photoelectron spectrum has also been recorded from 10.5 to 13 eV and compared to earlier low resolution works. A new value of (10.657 ± 0.002) eV for the ground ionic state adiabatic ionisation energy is proposed. All spectra presented in this paper represent the highest resolution data yet reported for acetic acid. New ab initio calculations help in the assignment of the spectral bands.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

• Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM) - UMR 8523

Source :

Harvested from HAL