- Tytuł:
- Ortho-Positronium in Some n-Alkanes; Influence of Temperature and Pressure
- Autorzy:
-
Zgardzińska, B.
Pietrow, M.
Goworek, T.
Wawryszczuk, J. - Powiązania:
- https://bibliotekanauki.pl/articles/2047166.pdf
- Data publikacji:
- 2006-11
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
36.10.Dr
61.80.Fe
71.60.+z
78.70.Bj - Opis:
- Positron lifetime spectra were measured for a series of odd-numbered n-alkanes from C$\text{}_{11}$H$\text{}_{24}$ to C$\text{}_{19}$H$\text{}_{40}$ as a function of temperature and pressure. The ortho-Ps lifetimes in the rotator phase and the increase in intensity at the transition to that phase can be explained by location of Ps in the vicinity of kink-type conformers. The relation between o-Ps lifetime and molecule length can be described in the framework of extended Tao-Eldrup model. One can eliminate the effect of intensity rise in time by sample illumination or by application of high pressure. A decrease in temperature by 1 K is equivalent to an increase in pressure by about 4 MPa.
- Źródło:
-
Acta Physica Polonica A; 2006, 110, 5; 747-753
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł