title: Spin-exchange-induced circularly polarized molecular fluorescence.
abstract: We have measured the circular polarization of light emitted from both atomic H and molecular H2 after bombarding H2 with longitudinally polarized electrons. For both atomic and molecular fluorescence near threshold we observe a circular polarization as great as 10% of the electron polarization. This represents the first direct observation of spin transfer in electron-molecule collisions.
authors.affiliation: Behlen Laboratory of Physics, University of Nebraska, Lincoln, Nebraska 68588-0111, USA.
authors.forename: A S
authors.initials: AS
authors.lastname: Green
authors.forename: G A
authors.initials: GA
authors.lastname: Gallup
authors.forename: M A
authors.initials: MA
authors.lastname: Rosenberry
authors.forename: T J
authors.initials: TJ
authors.lastname: Gay