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- W2157344476 abstract "In a joint experimental and theoretical effort, we carried out a detailed study of electron scattering from Kr atoms in the energy range of the low-lying Kr − (4p 5 5s 2 ) Feshbach resonances. Absolute angle-differential cross sections for elastic electron scattering were measured over the energy range 9.3–10.3 eV with an energy width of about 13 meV at scattering angles between 10 ◦ and 180 ◦ . Using several sets of elastic scattering phase shifts, a detailed analysis of the sharp Kr − (4p 5 5s 22 P3/2) resonance was carried out, resulting in a resonance width of � 3/2 = 3.6(2) meV. By direct comparison with the position of the Ar − (3p 5 4s 22 P3/2) resonance, the energy for the Kr − (4p 5 5s 22 P3/2) resonance was determined as E3/2 = 9.489(3) eV. A Fano-type fit of the higher lying Kr − (4p 5 5s 22 P1/2) resonance yielded the resonance parameters � 1/2 = 33(5) meV and E1/2 = 10.126(4) eV. In order to obtain additional insights, B-spline R-matrix calculations were performed for both the elastic and the inelastic cross sections above the threshold for 4p 5 5s excitation. They provide the total and angle-differential cross sections for excitation of long-lived and short-lived levels of the 4p 5 5s configuration in Kr and branching ratios for the decay of the Kr − (4p 5 5s 22 P1/2) resonance into the three available exit channels. The results are compared with selected experimental data. (Some figures in this article are in colour only in the electronic version)" @default.
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- W2157344476 date "2010-04-06" @default.
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- W2157344476 title "New light on the Kr<sup>−</sup>(4p<sup>5</sup>5s<sup>2</sup>) Feshbach resonances: high-resolution electron scattering experiments and<i>B</i>-spline<i>R</i>-matrix calculations" @default.
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- W2157344476 doi "https://doi.org/10.1088/0953-4075/43/8/085206" @default.
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