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Electron-impact ionization and excitation of helium to the n = 1-4 ionic states

Bellm, Susan; Lower, Julian; Bartschat, Klaus R


We present high-precision (e,2e) measurements and calculations for the e-He four-body Coulomb breakup problem. Cross-section ratios for ionization and excitation of the first three excited states of He+ relative to the ground state have been measured for incident energies between 112 and 319 eV. Comparing the data with predictions from a state-of-the-art hybrid distorted-wave+convergent  R matrix with pseudostates (close coupling) approach shows that treating the projectile-target interaction...[Show more]

CollectionsANU Research Publications
Date published: 2006-06-07
Type: Journal article
Source: Physical Review Letters
DOI: 10.1103/PhysRevLett.96.223201


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