Spectroscopy of Helium-Tagged C_{60} Anions

We present measurements of the electronic absorption spectrum of He -tagged buckminsterfullerene anions, C60-. Using a technique that allows for the efficient tagging of complex molecular anions with He, we achieve atomically resolved action spectra that provide an accurate determination of the gas -phase absorption spectrum in the near -infrared In total we 27 bands between 895 and 1057 nm.