Ultrafast dynamics of O2+ in the aΠu4 and 3Πu2 states by pump-probe measurements using few-cycle near-infrared laser pulses and high-order harmonicsRemoveKana Yamada, Toshiaki Ando, Atsushi Iwasaki, and Kaoru YamanouchiPhys. Rev. A 112, 063117 (2025)