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- W2011249558 abstract "An electron scattering apparatus, combining a laser photoelectron source, a triply differentially pumped supersonic beam target, and several electron multipliers for simultaneous detection of elastically scattered electrons and of metastable atoms due to inelastic scattering, has been used for an improved study of electron-neon scattering over the energy range $16--19phantom{rule{0.3em}{0ex}}mathrm{eV}$ at experimental energy widths of $4--6phantom{rule{0.3em}{0ex}}mathrm{meV}$. Accurate values for the energies and widths of the low-lying ${mathrm{Ne}}^{ensuremath{-}}(2{p}^{5}3{s}^{2}phantom{rule{0.2em}{0ex}}^{2}P_{3∕2,1∕2})$ Feshbach resonances have been determined from detailed analyses of the resonance profiles (measured at the five scattering angles 22.5ifmmode^circelsetextdegreefi{}, 45ifmmode^circelsetextdegreefi{}, 90ifmmode^circelsetextdegreefi{}, 112.5ifmmode^circelsetextdegreefi{}, 135ifmmode^circelsetextdegreefi{}). In addition, the excitation function for the production of metastable ${mathrm{Ne}}^{*}(2{p}^{5}3sphantom{rule{0.2em}{0ex}}^{3}P_{2,0})$ atoms has been measured from threshold to $19phantom{rule{0.3em}{0ex}}mathrm{eV}$; from a fit to its onset, the absolute electron energy scale is established to better than $0.5phantom{rule{0.3em}{0ex}}mathrm{meV}$. While our resonance widths agree with the recommended values, the resonance energies differ by an amount larger than the quoted respective uncertainties. The experimental data are also compared with theoretical results, calculated with an improved $R$-matrix approach. Very good overall agreement between the experimental and the theoretical results is observed. A very sharp Feshbach resonance, associated with the ${mathrm{Ne}}^{*}(2{p}^{5}3p{[5∕2]}_{2})$ level, has been theoretically predicted and experimentally confirmed at $18.527phantom{rule{0.3em}{0ex}}mathrm{eV}$." @default.
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- W2011249558 date "2005-01-06" @default.
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- W2011249558 title "Low-lying resonances in electron-neon scattering: Measurements at<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:mn>4</mml:mn><mml:mtext>−</mml:mtext><mml:mi>meV</mml:mi></mml:mrow></mml:math>resolution and comparison with theory" @default.
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- W2011249558 doi "https://doi.org/10.1103/physreva.71.012704" @default.
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