NUKLEONIKA 2010, 55(1):47-49

 


POSITRON STUDY OF THE STRUCTURE OF NONADECANE-TRICOSANE MIXED SOLID



Bożena 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.


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