title: Velocity map photoelectron-photoion coincidence imaging on a single detector.
abstract: Here we report on a new simplified setup for velocity map photoelectron-photoion coincidence imaging using only a single particle detector. We show that both photoelectrons and photoions can be extracted toward the same micro-channel-plate delay line detector by fast switching of the high voltages on the ion optics. This single detector setup retains essentially all the features of a standard two-detector coincidence imaging setup, viz., the high spatial resolution for electron and ion imaging, while only slightly decreasing the ion time-of-flight mass resolution. The new setup paves the way to a significant cost reduction in building a coincidence imaging setup for experiments aiming to obtain the complete correlated three-dimensional momentum distribution of electrons and ions.
authors.affiliation: LaserLaB Amsterdam, VU University Amsterdam, de Boelelaan 1083, 1081 HV Amsterdam, The Netherlands.
authors.forename: C Stefan
authors.initials: CS
authors.lastname: Lehmann
authors.forename: N Bhargava
authors.initials: NB
authors.lastname: Ram
authors.forename: Maurice H M
authors.initials: MH
authors.lastname: Janssen