Infrared Vacuum-Ultraviolet Laser Pulsed Field Ionization-Photoelectron Study of CH₃Br⁺(X˜ 2E3/2)
The research described in this product was performed in part in the Environmental Molecular Sciences Laboratory, a national scientific user facility sponsored by the Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory. By preparing methyl bromide (CH₃Br) in selected rotational levels of the CH₃Br(X˜ 1A1; V1 = 1) state with infrared (IR) laser excitation prior to vacuum-ultraviolet (VUV) laser pulsed field ionization-photoelectron (PFI-PE) measurements, we have observed rotationally resolved photoionization transitions to the CH₃Br⁺(X˜ 2E3/2; V1 + = 1) state, where V1 and V1 + are the symmetric C-H stretching vibrational mode for the neutral and cation, respectively. The VUV-PFI-PE origin band for CH₃Br⁺(X˜ 2E3/2) has also been measured. The simulation of these IR-VUV-PFI-PE and VUV-PFI-PE spectra have allowed the determination of the V1 + vibrational frequency (2901.8 ( 0.5 cm-1) and the ionization energies of the origin band (85 028.3 ( 0.5 cm-1) and the V1 + ) 1 r V1 ) 1 band (84 957.9 ( 0.5 cm-1).
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 959197
- Journal Information:
- Journal of Physical Chemistry A, 112(39):9277-9282, Journal Name: Journal of Physical Chemistry A, 112(39):9277-9282 Journal Issue: 39 Vol. 112; ISSN 1089-5639
- Country of Publication:
- United States
- Language:
- English
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