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.

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

References in corpus (3)

• Positron-molecule interactions: resonant attachment, annihilation, and bound states
• Many-body theory of positron-atom interactions
• Positron-atom scattering using pseudo-state energy shifts

Cited by in corpus (5)

• Model-potential calculations of positron binding, scattering, and annihilation for atoms and small molecules, using a Gaussian basis
• Mode coupling and multiquantum vibrational excitations in Feshbach-resonant positron annihilation in molecules
• Scalar Static Polarizabilities of Lanthanides and Actinides
• Many-Body Theory Calculations of Positron Scattering and Annihilation in H${}_2$, N${}_2$ and CH${}_4$
• Positron annihilation and binding in aromatic and other ring molecules