- Tytuł:
- Positron Scattering at Thermal Energies
- Autorzy:
-
Fedus, K.
Karwasz, G. - Powiązania:
- https://bibliotekanauki.pl/articles/1340032.pdf
- Data publikacji:
- 2014-03
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
34.80.-i
34.80.Bm
34.80.Uv - Opis:
- Modified effective range theory in analytical form is used to extrapolate elastic cross-sections down to thermal energies for positron scattering from five atomic and molecular targets including Ar, $H_2$, $N_2$, $C_6H_6$ (benzene) and $C_6H_{12}$ (c-hexane). The derived scattering parameters are then used to estimate the annihilation rates for chosen elements using a simple formula by Gribakin. We show that a combination of two simple models has a potential for accurate parameterization of coefficients describing the interaction of thermal positrons with non-polar targets of low polarizability such as Ar and $N_2$.
- Źródło:
-
Acta Physica Polonica A; 2014, 125, 3; 829-832
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł