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Electron-temperature dependence of dissociative recombination of electrons with C O + · ( CO ) n </…

1981; American Institute of Physics; Volume: 23; Issue: 3 Linguagem: Inglês

10.1103/physreva.23.1481

0556-2791

Marlin Whitaker, Manfred A. Biondi, Rainer Johnsen,

Atmospheric Ozone and Climate

A microwave-afterglow mass-spectrometer apparatus has been used to determine the dependence on electron temperature ${T}_{e}$ of the recombination coefficients ${\ensuremath{\alpha}}_{n}$ of the dimer and trimer ions of the series $\mathrm{C}{\mathrm{O}}^{+}\ifmmode\cdot\else\textperiodcentered\fi{}{(\mathrm{CO})}_{n}$. We find ${\ensuremath{\alpha}}_{1}=(1.3\ifmmode\pm\else\textpm\fi{}0.3)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}{[\frac{{T}_{e}(\mathrm{K})}{300}]}^{\ensuremath{-}0.34}$ and ${\ensuremath{\alpha}}_{2}=(1.9\ifmmode\pm\else\textpm\fi{}0.4)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}{[\frac{{T}_{e}(\mathrm{K})}{300}]}^{\ensuremath{-}0.33}$ ${\mathrm{cm}}^{3}$/sec. These dependences on ${T}_{e}$ are quite different from those obtained previously for polar-cluster ions of the hydronium and ammonium series but are similar to that for simple diatomic ions.