High-resolution, low-energy positron scattering from helium: Measurements of the total scattering cross section

J. P. Sullivan; C. Makochekanwa; A. Jones; P. Caradonna; S. J. Buckman

doi:10.1088/0953-4075/41/8/081001

High-resolution, low-energy positron scattering from helium: Measurements of the total scattering cross section

J. P. Sullivan, C. Makochekanwa, A. Jones, P. Caradonna, S. J. Buckman

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Abstract

We present high-resolution (80 meV FWHM) measurements of the positron-helium total cross section in the energy range between 1 and 15 eV. The absolute magnitude of the cross section is in excellent agreement with recent state-of-the-art theoretical calculations and with previous absolute measurements (e.g. Mizogawa et al). Specific scans in the 1-3 eV and 5-8 eV energy regions reveal no evidence of the structures in the cross section reported by Karwasz et al.

Original language	English
Article number	081001
Journal	Journal of Physics B: Atomic, Molecular and Optical Physics
Volume	41
Issue number	8
DOIs	https://doi.org/10.1088/0953-4075/41/8/081001
Publication status	Published - 28 Apr 2008

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10.1088/0953-4075/41/8/081001

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AU - Sullivan, J. P.

AU - Makochekanwa, C.

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AU - Caradonna, P.

AU - Buckman, S. J.

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AB - We present high-resolution (80 meV FWHM) measurements of the positron-helium total cross section in the energy range between 1 and 15 eV. The absolute magnitude of the cross section is in excellent agreement with recent state-of-the-art theoretical calculations and with previous absolute measurements (e.g. Mizogawa et al). Specific scans in the 1-3 eV and 5-8 eV energy regions reveal no evidence of the structures in the cross section reported by Karwasz et al.

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High-resolution, low-energy positron scattering from helium: Measurements of the total scattering cross section

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