Electron Temperature Dependence of Recombination of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msubsup><mml:mrow><mml:mi mathvariant="normal">Ne</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msubsup></mml:mrow></mml:math>Ions with Electrons

TL;DRAbstract

The electron temperature dependence of the recombination of mass-identified ${\mathrm{Ne}}_{2}^{+}$ ions with electrons is studied by means of a microwave-afterglow/mass-spectrometer apparatus employing microwave heating of the electrons. Under conditions where the ion wall current "tracks" the volume electron-density decay, the electron-decay data indicate that $\ensuremath{\alpha}({\mathrm{Ne}}_{2}^{+})$ decreases as ${{T}_{e}}^{\ensuremath{-}0.49}$ over the range $300\ifmmode^\circ\else\textdegree\fi{}\mathrm{K}&lt;~{T}_{e}&lt;~4600\ifmmode^\circ\else\textdegree\fi{}\mathrm{K}$, starting at a value (1.75\ifmmode\pm\else\textpm\fi{}0.2) \ifmmode\times\else\texttimes\fi{} ${10}^{\ensuremath{-}7}$ ${\mathrm{cm}}^{3}$/sec at ${T}_{e}=300\ifmmode^\circ\else\textdegree\fi{}$K. This value and this variation with ${T}_{e}$ are in good agreement with the results of other studies, all but one of which did not employ mass identification of the ions under study.

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