Fig. 5. Quantum wave packet dynamics simulation.

a The potential energy surface of ${\mathrm{CH}}_4^{+}$ cation in the sphere. b Time dependence of the populations in the C_2v and D_2d geometries of ${\mathrm{CH}}_4^{+}$ cation. The results are obtained by initially putting the wave packet on the C_3v geometry. I and II represent two distinct local maxima for the populations in the C_2v geometry. c Snapshots of wave packet density ρ(t) of ${\mathrm{CH}}_4^{+}$ cation in the sphere starting from C_3v geometry. c Top and bottom rows correspond to the front and back views of the sphere, respectively.