NUKLEONIKA 2010, 55(1):47-49
POSITRON STUDY OF THE STRUCTURE OF NONADECANE-TRICOSANE MIXED SOLIDBożena Zgardzińska, Tomasz Goworek Institute of Physics, Maria Curie-Skłodowska University, 1 M. Curie-Skłodowskiej Sq., 20-031 Lublin, Poland Positron annihilation lifetime and intensity were measured as a function of temperature for a binary mixture of two normal alkanes. The rotator phase is preceded by the range of about 7 K, in which one observes instability of spectrum parameters. In that range the mixed solid, being initially introduced into rotator phase, transforms to a rigid one in the time scale of several hours. Close X |