A technique for determining the sizes of vacancies and pores in metals by positron annihilation spectroscopy in the angstrom and nanometer ranges was proposed. Following the proposed technique, the radii of vacancy-type defects in iron were estimated. The obtained results were of special interest for research programs in which properties of critical engineering materials were studied using beams of slow positrons at positron facilities.

Determination of the Size of Vacancy-Type Defects in Angstrom Ranges by Positron Annihilation Spectroscopy. V.I.Grafutin, I.N.Meshkov, E.P.Prokopev, N.O.Khmelevskii, S.L.Yakovenko: Russian Microelectronics, 2011, 40[6], 428-35