Acetic acid electronic state spectroscopy by high-resolution vacuum ultraviolet photo-absorption, electron impact, He(I) photoelectron spectroscopy and ab initio calculations
Creators
- 1. Centre of Molecular and Optical Sciences, Department of Physics and Astronomy, Open University, Walton Hall, Milton Keynes MK7 6AA (United Kingdom)
- 2. Laboratorio de Colisoes Atomicas e Moleculares, Departamento de Fisica, CEFITEC, FCT-Universidade Nova de Lisboa, Quinta da Torre, 2829-516 Caparica (Portugal)
- 3. Laboratoire de Spectrometrie de Masse, Institut de Chimie des Substances Naturelles, CNRS, Avenue de la Terrasse, F-91198, Gif-sur-Yvette Cedex (France)
- 4. Laboratoire de Spectroscopie d'Electrons Diffuses, Universite de Liege, Institut de Chimie-Bat. B6C, B-4000 Liege (Belgium)
- 5. Laboratoire de Thermodynamique et Spectroscopie, Universite de Liege, Institut de Chimie-Bat. B6C, B-4000 Liege (Belgium)
- 6. Laboratoire de Physique des Lasers, Atomes et Molecules (PhLAM), UMR CNRS 8523, Centre d'Etudes et de Recherches Lasers et Applications (CERLA, FR CNRS 2416), Universite des Sciences et Technologies de Lille, F-59655 Villeneuve d'Ascq Cedex (France)
- 7. Institute for Storage Ring Facilities, University of Aarhus, Ny Munkegade, DK-8000, Aarhus C (Denmark)
Description
Electronic state spectroscopy of CH3COOH 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 deg. 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
Additional details
Identifiers
- DOI
- 10.1016/j.chemphys.2005.10.032;
- PII
- S0301-0104(05)00550-1;
Publishing Information
- Journal Title
- Chemical Physics
- Journal Volume
- 324
- Journal Issue
- 2-3
- Journal Page Range
- p. 339-349
- ISSN
- 0301-0104
- CODEN
- CMPHC2
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39096597
- Subject category
- S74: ATOMIC AND MOLECULAR PHYSICS;
- Descriptors DEI
- ABSORPTION; ABSORPTION SPECTRA; ABSORPTION SPECTROSCOPY; ACETIC ACID; ELECTRON BEAMS; ELECTRONIC STRUCTURE; ENERGY-LOSS SPECTROSCOPY; EV RANGE 01-10; EV RANGE 10-100; EXCITATION; FAR ULTRAVIOLET RADIATION; GROUND STATES; HELIUM; IONIZATION; PHOTOELECTRON SPECTROSCOPY; PHOTON BEAMS; PHYSICAL RADIATION EFFECTS; RYDBERG STATES; SCATTERING; VIBRATIONAL STATES
- Descriptors DEC
- BEAMS; CARBOXYLIC ACIDS; ELECTROMAGNETIC RADIATION; ELECTRON SPECTROSCOPY; ELEMENTS; ENERGY LEVELS; ENERGY RANGE; ENERGY-LEVEL TRANSITIONS; EV RANGE; EXCITED STATES; FLUIDS; GASES; LEPTON BEAMS; MONOCARBOXYLIC ACIDS; NONMETALS; ORGANIC ACIDS; ORGANIC COMPOUNDS; PARTICLE BEAMS; RADIATION EFFECTS; RADIATIONS; RARE GASES; SORPTION; SPECTRA; SPECTROSCOPY; ULTRAVIOLET RADIATION
Optional Information
- Copyright
- Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.