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Strong-field Fourier transform vibrational spectroscopy of methanol cation and its isotopologues using few-cycle near-infrared laser pulses

Pump-probe measurements of methanol and its isotopologues (CH 3 OH, CH 3 OD and CD 3 OH) were performed using near-infrared few-cycle intense laser pulses. The yields of the parent ion and the fragment ions oscillate as a function of the pump-probe time delay, reflecting the time evolution of the vi...

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Published in:Molecular physics 2019-07, Vol.117 (13), p.1732-1740
Main Authors: Ando, Toshiaki, Iwasaki, Atsushi, Yamanouchi, Kaoru
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description Pump-probe measurements of methanol and its isotopologues (CH 3 OH, CH 3 OD and CD 3 OH) were performed using near-infrared few-cycle intense laser pulses. The yields of the parent ion and the fragment ions oscillate as a function of the pump-probe time delay, reflecting the time evolution of the vibrational wave packet created in methanol and methanol cation by the pump pulse. By the Fourier transform (FT) of the time-domain data, the vibrational mode frequencies of methanol and methanol cations were determined on the basis of the assignment of the peak profiles in the FT spectra made using their relative phases and the theoretical vibrational frequencies and potential energy distributions.
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source Taylor and Francis Science and Technology Collection
subjects Cations
Fourier transforms
Infrared lasers
intense laser fields
Methanol
Methanol cation
Potential energy
Spectrum analysis
strong-field Fourier transform spectroscopy
Time lag
ultrafast molecular dynamics
vibrational spectroscopy
title Strong-field Fourier transform vibrational spectroscopy of methanol cation and its isotopologues using few-cycle near-infrared laser pulses
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