${\mathrm{N}}_2^{+}$ first-negative emission cross sections for low-energy ${\mathrm{H}}^{+}$ and H impact on ${\mathrm{N}}_2$

Absolute emission cross sections for the (0,1), (1,2), and (2,3) band emission sequence of the ${\mathrm{N}}_2^{+}$ first-negative system have been measured for low-energy ${\mathrm{H}}^{+}$ and H collisions with room-temperature ${\mathrm{N}}_2$ molecules. The energy range covered for ${\mathrm{H}}^{+}$ impact was from 63 eV to 2.0 keV, and that for H impact was from 160 eV to 2.5 keV. For H+${\mathrm{N}}_2$ collisions, cross sections for ${\mathrm{N}}_2$ second-positive emissions for the (1,5) and (2,6) emission bands were also determined. The total cross sections for production of ${\mathrm{N}}_2^{+}$($B$) and ${\mathrm{N}}_2$($C$) were determined from these measured results. The techniques used to accomplish the measurements are described, and the cross sections obtained are compared with the results of other investigations.