Polarisation study of electron impact excitation of the 31P state of helium

P A Neill; B P Donnelly; A Crowe

doi:10.1088/0953-4075/22/9/014

Journal of Physics B: Atomic, Molecular and Optical Physics

Polarisation study of electron impact excitation of the 3¹P state of helium

P A Neill¹, B P Donnelly¹ and A Crowe¹

Published under licence by IOP Publishing Ltd
Journal of Physics B: Atomic, Molecular and Optical Physics, Volume 22, Number 9 Citation P A Neill et al 1989 J. Phys. B: At. Mol. Opt. Phys. 22 1417 DOI 10.1088/0953-4075/22/9/014

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¹ Dept. of Pure & Appl. Phys., Queen's Univ., Belfast, UK

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Abstract

A polarisation correlation technique has been used to study electron impact excitation of the 3¹P state of helium. Values of the three relative Stokes parameters P₁, P₂ and P₃ are reported over an angular range of 35' to 120' and at energies of 29.6 and 26.5 eV. The data are compared with recent angular correlation measurements from this laboratory and with the predictions of a 19-state R-matrix calculation.

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