Author/Authors :
Danielle Lodewyck Falciglia، نويسنده , , F. and Lo Savio، نويسنده , , F.R. and Lo Savio، نويسنده , , M. and Oliveri، نويسنده , , M.E. and Patané، نويسنده , , F.، نويسنده ,
Abstract :
The speed of the gamma-rays obtained from positron annihilation has been measured as a test of the long-term stability of a fast timing coincidence system. The value c = (2.9978 ± 0.0002)108 m/s has been obtained, whose precision is the best among those obtained from nuclear timing techniques.
