Exchange assisted tunneling and positron annihilation on inner atomic shells

Abstract

It is known for a long time that the long range asymptotic behavior of the Hartree-Fock orbitals is different from that of the orbitals in the local potential. However, there is no consensus about observable physical effects associated with this asymptotics. Here we argue that weaker decrease of the Hartree-Fock orbitals at large distances is responsible for the positron annihilation on the inner shell electrons, which is observed experimentally.

8 pages, 3 figures, submitted to PRA

References in corpus (5)

• Many-body theory of gamma spectra from positron-atom annihilation
• Exchange interaction and correlations radically change behaviour of a quantum particle in a classically forbidden region
• Effect of electron exchange on atomic ionization in a strong electric field
• Exchange interaction radically changes behavior of a quantum particle in a classically forbidden region: simple model
• Exchange-assisted tunneling in the classical limit

Cited by in corpus (1)

• $\gamma$-ray spectra and enhancement factors for positron annihilation spectra with core-electrons