title: The VUV electronic spectroscopy of acetone studied by synchrotron radiation.
abstract: The electronic state spectroscopy of acetone (CH3)2CO has been investigated using high-resolution VUV photoabsorption spectroscopy in the energy range 3.7-10.8 eV. New vibronic structure has been observed, notably in the low energy absorption band assigned to the 1(1)A(1) --> 1(1)A2 (ny --> pi*) transition. The local absorption maximum at 7.85 eV has been tentatively attributed to the 4(1)A1 (pi --> pi*) transition. Six Rydberg series converging to the lowest ionisation energy (9.708 eV) have been assigned as well as a newly-resolved ns Rydberg series converging to the first ionic excited state (12.590 eV). Rydberg orbitals of each series have been classified according to the magnitude of the quantum defect (delta) and are extended to higher quantum numbers than in the previous analyses.
authors.affiliation: Laboratório de Colisões Atómicas e Moleculares, Departamento de Física, CEFITEC, Universidade Nova de Lisboa, 2829-516, Caparica, Portugal.
authors.forename: M
authors.initials: M
authors.lastname: Nobre
authors.forename: A
authors.initials: A
authors.lastname: Fernandes
authors.forename: F
authors.initials: F
authors.lastname: Ferreira da Silva
authors.forename: R
authors.initials: R
authors.lastname: Antunes
authors.forename: D
authors.initials: D
authors.lastname: Almeida
authors.forename: V
authors.initials: V
authors.lastname: Kokhan
authors.forename: S V
authors.initials: SV
authors.lastname: Hoffmann
authors.forename: N J
authors.initials: NJ
authors.lastname: Mason
authors.forename: S
authors.initials: S
authors.lastname: Eden
authors.forename: P
authors.initials: P
authors.lastname: Limão-Vieira
mesh_terms: D000042:Absorption; D000096:Acetone / Q000737:chemistry*; D017785:Photons; D011789:Quantum Theory; D011827:Radiation; D013056:Spectrophotometry, Ultraviolet; D017356:Synchrotrons; D013816:Thermodynamics
chemical_list: D000096:Acetone