Wave packet bifurcation in ultrafast hydrogen migration in CH3OH+ by pump-probe coincidence momentum imaging with few-cycle laser pulses

Multiple ionization and Coulomb explosion of molecules, molecular complexes, clusters and solid surfaces

“…Despite this, we have listed here only selected studies performed from 2004 to data on Coulomb explosion of isolated large molecules initiated by femtosecond laser pulses. The family of molecules include aliphatic and [52,125,[141][142][143][144][145][146][147][148][149][150][151][152][153][154][155][156][157][158][159] aromatic hydrocarbons [92,[160][161][162], halogenated molecules [33,42,[163][164][165][166][167][168][169][170][171][172][173][174][175][176] and alcohols [49,51,53,155,[177][178]…”

“…Hydrogen migration in cationic and/or dicationic species is one of the most interesting chemical reactions occurring in intense laser fields. Yamanouchi and co-workers have studied in detail hydrogen migration taking place in ions derived from acetonitrile [48,50], methanol [49,51,53,[179][180][181], allene [52,149], butadiene [150,151], and methylacetylene [153].…”

“…Coulomb explosion of dications, often called a charge separation process, has been extensively studied by using electron ionization (EI) mass spectrometry [47]. Recently, the chemical reactions of dications have risen to an important position in intense laser chemistry because the yields of dications are greatly enhanced by using femtosecond laser ionization [48][49][50][51][52][53][54]. Here we would like to define short-lived MMCs as species that are not detected by using time-of-flight mass spectrometer (TOF-MS).…”

Coherent vibrations in methanol cation probed by periodic H3+ ejection after double ionization

“…The details of our experimental setup have been described in the previous report 22 . Briefly, few-cycle laser pulses were generated by a hollow-core fiber compression technique using an output of a chirped pulse amplification femtosecond Ti:sapphire laser system (800 nm, 5 kHz, 0.6 mJ, 30 fs).…”

“…As the value of α, α = 0.79(5) was adopted for CH 3 OH, which was obtained in ref. 22 by comparing the total ion yield obtained by the pump laser pulse only, by the probe laser pulse only, and by the pump and probe laser pulses. For CH 3 OD, the lower value α, α = 0.4, was adopted for CH 3 OD because the sample is depleted to a larger extent associated with the larger laser pulse intensity.…”