title: Imaging polyatomic molecules in three dimensions using molecular frame photoelectron angular distributions.
abstract: We demonstrate a method for determining the full three-dimensional molecular-frame photoelectron angular distribution in polyatomic molecules using methane as a prototype. Simultaneous double Auger decay and subsequent dissociation allow measurement of the initial momentum vectors of the ionic fragments and the photoelectron in coincidence, allowing full orientation by observing a three-ion decay pathway, (H+, H+, CH2(+)). We find the striking result that at low photoelectron energies the molecule is effectively imaged by the focusing of photoelectrons along bond directions.
authors.affiliation: Department of Physics, Auburn University, Auburn, Alabama 36849, USA.
authors.forename: J B
authors.initials: JB
authors.lastname: Williams
authors.forename: C S
authors.initials: CS
authors.lastname: Trevisan
authors.forename: M S
authors.initials: MS
authors.lastname: Schöffler
authors.forename: T
authors.initials: T
authors.lastname: Jahnke
authors.forename: I
authors.initials: I
authors.lastname: Bocharova
authors.forename: H
authors.initials: H
authors.lastname: Kim
authors.forename: B
authors.initials: B
authors.lastname: Ulrich
authors.forename: R
authors.initials: R
authors.lastname: Wallauer
authors.forename: F
authors.initials: F
authors.lastname: Sturm
authors.forename: T N
authors.initials: TN
authors.lastname: Rescigno
authors.forename: A
authors.initials: A
authors.lastname: Belkacem
authors.forename: R
authors.initials: R
authors.lastname: Dörner
authors.forename: Th
authors.initials: T
authors.lastname: Weber
authors.forename: C W
authors.initials: CW
authors.lastname: McCurdy
authors.forename: A L
authors.initials: AL
authors.lastname: Landers