Detection of positron-atom bound states through resonant annihilation

Abstract

A method is proposed for detecting positron-atom bound states by observing enhanced positron annihilation due to electronic Feshbach resonances at electron-volt energies. The method is applicable to a range of open-shell transition metal atoms which are likely to bind the positron: Fe, Co, Ni, Tc, Ru, Rh, Sn, Sb, Ta, W, Os, Ir, and Pt. Estimates of their binding energies are provided.

arXiv comment5 pages, 1 figure; estimates of binding energies have been added

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Cited by in corpus (14)

• Atoms which can bind positrons
• Formation of positron-atom bound states in collisions between Rydberg Ps and neutral atoms
• Calculations of positron binding and annihilation in polyatomic molecules
• Positron scattering and annihilation in hydrogen-like ions
• Model-potential calculations of positron binding, scattering, and annihilation for atoms and small molecules, using a Gaussian basis
• Effect of chlorination on positron binding to hydrocarbons: experiment and theory
• Mode coupling and multiquantum vibrational excitations in Feshbach-resonant positron annihilation in molecules
• Positron attachment to the He doubly excited states
• Relativistic coupled-cluster single-double calculations of positron-atom bound states
• Many-Body Theory Calculations of Positron Scattering and Annihilation in H${}_2$, N${}_2$ and CH${}_4$
• Scalar Static Polarizabilities of Lanthanides and Actinides
• Effect of dipole polarizability on positron binding by strongly polar molecules
• Positron annihilation and binding in aromatic and other ring molecules
• Positron elastic scattering by a semifilled-shell atom