Mobilities and Reaction Rates of Neon Ions in Neon

Abstract

The mobilities of ${\mathrm{Ne}}^{+}$ and $\mathrm{Ne}_2^{}{}_{}{}^{+}$ ions in neon have been measured at 300°K. The mobilities of ${\mathrm{Ne}}^{+}$ and $\mathrm{Ne}_2^{}{}_{}{}^{+}$ at low $\frac{E}{p_0}$ are given by the equations $K\left({\mathrm{Ne}}^{+}\right)=4.07\mathrm{}{[1+8.0\mathrm{}\times {10}^3{\left(\frac{E}{p_0}\right)}^2+2.0\mathrm{}\times {10}^{-6\mathrm{}}{\left(\frac{E}{p_0}\right)}^4]}^{-\frac{1}{8}}$ and $K\left({{\mathrm{Ne}}_2}^{+}\right)=6.14\mathrm{}{\left\{\frac{[1+8.3\mathrm{}\times {10}^{-3\mathrm{}}{\left(\frac{E}{p_0}\right)}^2]}{[1+2.0\mathrm{}\times {10}^{-3\mathrm{}}{\left(\frac{E}{p_0}\right)}^2+8.4\mathrm{}\times {10}^{-6\mathrm{}}{\left(\frac{E}{p_0}\right)}^4]}\right\}}^{\frac{1}{4}}$, with $\frac{E}{p_0}$ in V/cm Torr. The ${\mathrm{Ne}}^{+}$ was observed to convert to $\mathrm{Ne}_2^{}{}_{}{}^{+}$ by a three-body reaction with a rate coefficient ranging from about 7×${10}^{-32\mathrm{}}$ ${\mathrm{cm}}^6$/sec at $\frac{E}{p_0}=2.0\mathrm{}$ V/cm Torr to about 5×${10}^{-32\mathrm{}}$ ${\mathrm{cm}}^6$/sec at $\frac{E}{p_0}=6.0\mathrm{}$ V/cm Torr.