Positron annihilation in metal films
Valiev K. A. , Gol'danskii V. I. , Novikov Yu. A. , Rakov A. V. , Filimonov M. K., Shantarovich V. P.
Structural features have been observed in the angular distributions of annihilation γ rays from submicron metal films. These features correlate with the positron work functions of these metals.