- Tytuł:
- Positrons in naphthalene : critical remarks on the relation between o-Ps lifetime and void size
- Autorzy:
-
Goworek, T.
Zgardzińska, B.
Wawryszczuk, J. - Powiązania:
- https://bibliotekanauki.pl/articles/148003.pdf
- Data publikacji:
- 2013
- Wydawca:
- Instytut Chemii i Techniki Jądrowej
- Tematy:
-
high pressure
naphthalene
positronium quenching
free volume - Opis:
- Lowering the temperature or applying high pressure leads to elimination of positronium component in the e+ lifetime spectrum in solid naphthalene. Disappearance of positronium means reaching the free volume size limit at which there is no energy level in the potential well. It allows to estimate that size, which is found inconsistent with predictions of the popular Tao-Eldrup model. The range of applicability of that model is discussed. The dependence of the free e+ decay constant on pressure indicates that positronium is formed not only in the blob processes, but during the whole free positron life. The lifetime of free positrons begins to rise with temperature earlier than Ps intensity.
- Źródło:
-
Nukleonika; 2013, 58, 1; 183-187
0029-5922
1508-5791 - Pojawia się w:
- Nukleonika
- Dostawca treści:
- Biblioteka Nauki
Artykuł