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- W1661991966 abstract "Using a Spline-Garlekin and inverse iteration method, we studied in detail the photodetachment cross section of the ${mathrm{He}}^{ensuremath{-}}$ $(1s2s2p{}^{4}{P}^{o})$ state in the region of the $1s$ detachment threshold. Details of the cross section from threshold to 44 eV are presented. The effects of core excitation and continuum channel coupling are studied. A very narrow $2s3s4s{}^{4}S$ resonance was found at 42.866 00 eV with a width of 0.103 meV. Other resonance structures are also found and analyzed. We studied the ${2s2p}^{2}{}^{4}P$ resonance state that lies immediately below the $1s$ threshold. The width and position of this state, obtained from this calculation, are 37.669 eV and 9.850 meV, respectively. This result is in good agreement with other theoretical calculations." @default.
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- W1661991966 date "1999-01-01" @default.
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- W1661991966 title "Photodetachment cross section ofHe−(1s2s2p4Po)in the region of the1sdetachment threshold" @default.
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- W1661991966 doi "https://doi.org/10.1103/physreva.59.307" @default.
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