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Positron-atom scattering by the Kohn and Harris methods
The $S$-wave scattering parameters have been calculated for the ${e}^{+}\ensuremath{-}\mathrm{H}$ and ${e}^{+}\ensuremath{-}\mathrm{He}$ systems below the positronium-formation threshold. The phaseExpand
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The annihilation of galactic positrons
The annihilation of galactic positrons is studied in order to evaluate the probabilities of various channels of annihilation and to calculate the spectrum of the resulting radiation. The narrow widthExpand
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Annihilation in Gases and Galaxies
This publication contains most of the papers, both invited and contributed, that were presented at the Workshop of Annihilation in Gases and Galaxies. This was the fifth in a biennial seriesExpand
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Positron attachment to helium in the 3S state
A generalized Hylleraas trial function, properly antisymmetrized in the electron coordinates, is used to investigate positron attachment to 3S helium. A state lying below the ground state of the 3SExpand
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Annihilation during positron-hydrogen collisions: Addendum and erratum
The $p$-wave contribution to the positron-hydrogen annihilation rate, in terms of ${Z}_{\mathrm{eff}}$, is corrected from a previous calculation of the authors, thereby removing the discrepancy withExpand
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Annihilation during positron-hydrogen collisions
obtained previously, we have calculated the annihiiation rate for positrons colliding with hydrogen atoms below the positronium-formation threshold. The s-wave results agree well with those ofExpand
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A new global operator for two-particle delta functions. [hyperfine structure of muonic helium]
A new type of global operator to be used in evaluating matrix elements of two-particle delta functions is introduced. It is based, like the Trivedi (1980) one-particle operator, on the PoissonExpand
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Deexcitation of muonic molecules by internal conversion.
Stabilization of the resonantly formed muonic molecular ion (td..mu..) depends on the transition from the excited J = 1 state to some lower-lying state in competition with decay through the entranceExpand
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