Charge Transfer for Reactions of Sc³⁺ with N₂ and H₂ at Electron-volt Energy

The charge transfer rate coefficients for reactions of Sc³⁺ with N₂ and H₂ have been measured at the mean collision energy of 4.2eV. The rate coefficients are derived from the decay rate of ion signals by using ion storage in a radio-frequency ion trap. The rate coefficients are 8.18(0.18)×10^-10cm³.s^-1 at T_equiv ≈1.26×10⁴K for Sc³⁺ with N₂ and 1.44(0.39)×10^-9cm³.s^-1 at T_equiv> ≈ 1.67×10³ K for Sc³⁺ with H₂, respectively. Both results are comparable with the Langevin rate coefficients.