Collision Cross Sections of 400- to 1800-keV $\mathrm{H}_3^{}{}_{}{}^{+}$ Ions in Collisions with ${\mathrm{H}}_2$ and ${\mathrm{N}}_2$ Gases and Li Vapor

Cross-section measurements of the dissociation modes $\mathrm{H}_3^{}{}_{}{}^{+}$ → (3H and H + ${\mathrm{H}}_2$), H + $\mathrm{H}_2^{}{}_{}{}^{+}$, ${\mathrm{H}}^{+}$ + 2H, ${\mathrm{H}}^{+}$ + ${\mathrm{H}}_2$, H + 2${\mathrm{H}}^{+}$, ${\mathrm{H}}^{+}$ + $\mathrm{H}_2^{}{}_{}{}^{+}$, and 3${\mathrm{H}}^{+}$ are reported for $\mathrm{H}_3^{}{}_{}{}^{+}$ energies between 400 and 1800 keV in targets of ${\mathrm{H}}_2$, ${\mathrm{N}}_2$, and Li. For the ${\mathrm{H}}_2$ target, comparisons are made with available previous measurements of H, ${\mathrm{H}}^{+}$, ${\mathrm{H}}_2$, and $\mathrm{H}_2^{}{}_{}{}^{+}$ production cross sections at lower energies. Cross-section measurements for 270- to 1200-keV ${\mathrm{H}}_2$ → $\mathrm{H}_2^{}{}_{}{}^{+}$, H + ${\mathrm{H}}^{+}$, and 2${\mathrm{H}}^{+}$ are also reported.