Angular distributions of fragment ions arising from tetrahedral CH3I and isomer identification using intense laser fields

摘要: Utilizing an ultraintense (10(16) W cm(-2)) Is laser, the laser/matter interaction of tetrahedral CH3I molecule is investigated. A mass spectrum and angular distributions fragment ions arising from Coulomb explosion molecular ions, obtained with linearly polarized light, are presented. The for In+ (n less than or equal to 7), CHm+ (m 3), Cp+ (p 4) H+ all anisotropic maximal when polarization lies along spectrometer axis. hence seems behave as a diatomic, being ejected field direction. Also presented spectra isomers 1- 2-nitropropane, which explosive species, taken horizontal vertical polarizations at both 375 750 nm. It shown that femtosecond laser spectrometry (FLMS) can be used distinguish between these two through their differing dissociation patterns. Isomer identification important many different applications FLMS may provide means achieving this wide range molecules.