https://doi.org/10.1140/epjd/e2004-00069-3
High resolution multiphoton ionization and dissociation of acetone via 3s ← n Rydberg transitions
1
Centro de Ciencias Físicas, Universidad Nacional Autónoma de México, Cuernavaca, Mor. Apdo. Post. 48-3, C.P. 62210, Mexico
2
Laboratorio de Espectroscopía Atómica y Molecular, Universidad Industrial de Santander, Bucaramanga A.A.678, Colombia
Corresponding author: a emejia@ce.fis.unam.mx
Received:
21
November
2003
Revised:
21
March
2004
Published online:
11
May
2004
Measurements of multiphoton ionization and dissociation
of acetone are reported in the wavelength range 582.60–585.80 nm at photon
energy resolution of 0.3 cm-1. To our knowledge there are not available
results of (3+2) REMPI on acetone at 0.01 nm in this region. The experiments
were performed using an Nd:YAG-OPO (optical parametric oscillator) laser
system coupled to time-of-flight mass spectrometer. The ion yield and the
single ion channel are presented. The high-resolution three-photon resonance
multiphoton spectrum of the acetone 
Rydberg transition is also reported. The experimental results show three dissociation channels of the acetone ion,
leading to the products: (CH3CO
, (CH
and
(COH; the channel CH3COCH
3CO+ +
CH3 being the most favored. The acetone and acetyl ions are
observed in all wavelength range investigated. In addition, we have measured
the origin of the and 
transitions,
and vibrational bands of the 3s state.
PACS: 33.80.Rv – Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states) / 33.15.Ta – Mass spectra / 33.80.Gj – Diffuse spectra; predissociation, photodissociation
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2004
