Abstract
Photodissociation spectra of the molecular ion CH3I+ were obtained with a three stage quadrupole mass spectrometer. Starting from the\(\tilde X^2 E_{3/2} \) ground state, theà 2 E 1/2 state was excited with a stilbene 3 cw dye laser. This state predissociates to CH 3+ +I. Measuring the intensity of the CH 3+ fragment ions as a function of the wavelength of the exciting laser, a spectrum showing vibrational and rotational structure was obtained. The vibrational structure was assigned to three progressions ofv 3 and new vibrational frequencies were determined. From a computer simulation of the (0, 1, 10) band rotational constants were derived. In particular, their dependence on the vibrationv 3 was studied.
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On leave from Fudan University, Shanghai, Peoples's Republic of China
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Lingbing, C., Figger, H. & Quint, W. High resolution photofragment spectroscopy of the gas phase methyl iodide ion. Z Phys D - Atoms, Molecules and Clusters 13, 61–67 (1989). https://doi.org/10.1007/BF01437344
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DOI: https://doi.org/10.1007/BF01437344