title: Lifetime of C2Cl4(-) ions produced by nondissociative electron attachment to C2Cl4.
abstract: The lifetimes of long-lived C2Cl4(-) ions formed by Rydberg electron transfer in K(np)/C2Cl4 collisions are investigated using a Penning ion trap. Measurements at high n, n > or = 30, show that low-energy electron attachment to C2Cl4 leads to the production of C2Cl4(-) ions with a broad range of lifetimes that extends up to at least 1 ms. This is attributed to capture by molecules in different initial vibrational states. At low n, internal-to-translational energy transfer in postattachment interactions between the product K+ and C2Cl4(-) ions becomes important and leads to a substantial increase in ion lifetimes.
authors.affiliation: Department of Physics and Astronomy and the Rice Quantum Institute, MS 61 Rice University, Houston, Texas 77005, USA.
authors.forename: Y
authors.initials: Y
authors.lastname: Liu
authors.forename: L
authors.initials: L
authors.lastname: Suess
authors.forename: F B
authors.initials: FB
authors.lastname: Dunning