Angular distribution of ejected electrons from autoionizing 3 pns states of magnesium

Journal Article · Wed Jan 01 04:00:00 EST 1992 · Physical Review A. General Physics; (United States)

DOI:https://doi.org/10.1103/PhysRevA.45.231· OSTI ID:5133118

Lindsay, M D; Cai, L; Schinn, G W; Dai, C; Gallagher, T F ^[1]

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1. Department of Physics, University of Virginia, Charlottesville, Virginia 22901 (United States)

We have measured the angular distribution of electrons ejected from doubly excited autoionizing Rydberg 3{ital pns} {ital J}=1 states of magnesium, where {ital n}=10--20. Two dye lasers cross an atomic beam and excite 3{ital sns}{sup 1}{ital S}{sub 0} states of Mg. A third linearly polarized laser excites the 3{ital pns} states. The angular distribution is of the form ({sigma}/4{pi})(1+{beta}{ital P}{sub 2}(cos{theta})). We measure {beta} as a function of the energy of the third laser. The {beta} parameter varies over its full range of values, {minus}1 to 2. Our data agree quite well with the predictions of the reaction-matrix--multichannel-quantum-defect theory.

• OSTI ID: 5133118
• Journal Information: Physical Review A. General Physics; (United States), Journal Name: Physical Review A. General Physics; (United States) Vol. 45:1; ISSN 1050-2947; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

664200* -- Spectra of Atoms & Molecules & their Interactions with Photons-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ALKALINE EARTH METALS
ANGULAR DISTRIBUTION
ATOM COLLISIONS
ATOMIC BEAMS
AUTOIONIZATION
BEAMS
COLLISIONS
DISTRIBUTION
DYE LASERS
ELECTRON EMISSION
ELEMENTS
EMISSION
ENERGY-LEVEL TRANSITIONS
EXCITATION
IONIZATION
LASERS
LIQUID LASERS
MAGNESIUM
METALS
PHOTON COLLISIONS
PHOTON-ATOM COLLISIONS