Electron attachment to doped helium droplets: C(60)(-), (C(60))(2)(-), and C(60)D(2)O(-) anions
Helium nanodroplets, formed in a supersonic expansion, are doped with C(60) in a pickup cell. In some experiments, they are co-doped with water. Electrons are attached to the doped droplets; the yield of anions is recorded as a function of electron energy. The C(60)(-) yield extends to much higher energies than ill experiments involving isolated, hot fullerences; we attribute the difference to the low temperature of the neutral precursors and the efficient. cooling of the nascent anions by the helium droplet, which quench thermally activated autodetachment. The yields of (C(60))(2)(-) and C(60)D(2)O(-) anions reveal another important factor, namely depletion of the anion signal by dissociation which is energetically more facile than autodetachment.
European Physical Journal D
Digital Object Identifier (DOI)
Jaksch, S.; Maehr, I.; Denifl, S.; Bacher, A.; Echt, Olof E.; Maerk, T. D.; and Scheier, P., "Electron attachment to doped helium droplets: C(60)(-), (C(60))(2)(-), and C(60)D(2)O(-) anions " (2009). European Physical Journal D. 49.
© EDP Sciences, Societ`a Italiana di Fisica, Springer-Verlag 2009