Photodissociation and photodetachment of molecular negative ions. VI. Ions in O2/CH4/H2O mixtures from 3500 to 8600 Å

摘要: The photodestruction cross sections for O−, O2−, O2−⋅H2O, O3−, O3−⋅H2O, O4−, OH−, and OD− have been measured in the 3500–5400 A 6300–8600 wavelength regions. ions were produced a drift tube mass spectrometer interacted with dye laser or ion inside cavity. photodetachment O− OH−(OD−) sharp onsets at wavelengths near 8480 6795 A, respectively, shorter their values are nearly constant. O2−⋅H2O increase monotonically increasing photon energy. In contrast, section structure is observed over this region. processes creation of various negative discussed. Comparison made other measurements.