- Tytuł:
- Fast Stochastic Reorientations in Nematic PAA and PAP
- Autorzy:
-
Podsiadły, R.
Mayer, J.
Janik, J. A.
Krawczyk, J.
Stanek, T. - Powiązania:
- https://bibliotekanauki.pl/articles/1963251.pdf
- Data publikacji:
- 1997-03
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
35.20.Yh
24.50.Fq
61.30.Eb - Opis:
- Incoherent quasielastic neutron scattering spectra were measured for nematic para-azoxyanisole (PAA) and para-azoxyphenetole (PAP) with the energy resolution of ca. 30 μ eV, at Dubna IBR-2 reactor. Data processing contained a careful background subtraction and the multiple scattering correction. The corrected spectra were subjected to a reorientational model fitting procedure. For PAA, a model of two convoluted reorientations - that of benzene rings coupled with the terminals and that of the whole molecule around the long molecular axis - gave a fairly good description of the quasielastic neutron scattering spectrum. For PAP, introducing a third motion - interconformational jumps in the ethoxy terminals - in addition to motions suggested for PAA, gave a good agreement with the measured quasielastic neutron scattering spectrum.
- Źródło:
-
Acta Physica Polonica A; 1997, 91, 3; 513-518
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł