Trapping of low energy electrons at preexisting, cold water clusters

Abstract
Long-lived water cluster anions [(H2O)−n, n≥11, and (D2O)−n, n≥12] can be formed by electron attachment to a beam of preformed, neutral clusters; collisional stabilization is not required. Attachment occurs resonantly at or very close to 0 eV incident electron energy; the ion yield is unexpectedly large.