Autor: Wawryszczuk, M. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Electron traps in long-chain alkanes
Autorzy:: Pietrow, M.
Wawryszczuk, J.
Powiązania:: https://bibliotekanauki.pl/articles/146299.pdf
Data publikacji:: 2010
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: PALS
positron annihilation
electron traps
quenching by light
Opis:: Positron lifetime spectra in long-chain alkanes were measured at various wavelengths of light illuminating the samples as a function of temperature, storage time. It was found that in n-alkanes with carbon chain longer than 30 atoms two kinds of electron traps exist; the depth of shallower of them is less than 0.52 eV. They are discharged already at a temperature of 120 K.
Źródło:: Nukleonika; 2010, 55, 1; 51-55
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

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

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