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Electron impact excitation of the 3 1D state of helium - an electron-photon coherence study at small scattering angles

Lookup NU author(s): Dr Danica Cvejanovic, Emeritus Professor Albert Crowe

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Abstract

Electron impact excitation of the 3 1D state of helium has been studied using the scattered electron-polarized photon correlation method. Results are presented at incident electron energies of 26.5, 29.6, 40.0, 45.0 and 60.0 eV for scattering angles up to 40°. The data presented here complement the previous large angle data from this laboratory and taken together provide a complete mapping of the dimensionless parameters characterizing excitation of the 3 1D state of helium over a wide range of both angle and energy. Strong variations in the parameters as a function of energy and angle are discussed. Good agreement is observed between the experimental data and recent theoretical predictions.

Publication metadata

Author(s): Cvejanovic D, McLaughlin DT, Crowe A

Publication type: Article

Publication status: Published

Journal: Journal of Physics B: Atomic, Molecular and Optical Physics

Year: 2000

Volume: 33

Issue: 16

Pages: 3013-3022

ISSN (print): 0953-4075

ISSN (electronic): 1361-6455

Publisher: Institute of Physics Publishing Ltd.

URL: http://dx.doi.org/10.1088/0953-4075/33/16/306

DOI: 10.1088/0953-4075/33/16/306

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