Vibrational cooling in a cold ion trap: vibrationally resolved photoelectron spectroscopy of cold C60(-) anions.
作者： Xue-Bin Wang , Hin-Koon Woo , Lai-Sheng Wang
DOI: 10.1063/1.1998787
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摘要: We demonstrate vibrational cooling of anions via collisions with a background gas in an ion trap attached to cryogenically controlled cold head (10–400 K). Photoelectron spectra vibrationally C60− anions, produced by electrospray ionization and cooled the trap, have been obtained. Relative taken at room temperature, hot bands are completely eliminated, yielding well-resolved structures more accurate electron affinity for neutral C60. The C60 is measured be 2.683±0.008eV. reveal complicated transition ground state due Jahn-Teller effect C60−. Vibrational excitations two Ag modes eight Hg observed, providing ideal data assess vibronic couplings
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