Positronium lifetime in polymers
arXiv:physics/0406108 · doi:10.1063/1.1782051
Abstract
A model describing the relationship between the ortho--positronium lifetime and the volume of a void, located in a synthetic zeolite, is analyzed. Our idea, which allows us to take into account the effects of temperature, comprises the introduction of a non--hermitian term in the Hamiltonian, which accounts for the annihilation of the ortho--positronium. The predictions of the present model are also confronted against an already known experimental result.
Accepted in Journal of Chemical Physics