|
| << vorige | volgende >> |
Tijdschrift beschrijving
Alle jaargangen van het bijbehorende tijdschrift
Alle afleveringen van het bijbehorende jaargang
Alle artikelen van de bijbehorende aflevering
Details van artikel 4 van 20 gevonden artikelen
| Titel: |
Electric field gradients experienced by the noble gas isotopes 21Ne, 83Kr and 131Xe in thermotropic liquid crystals |
| Auteur: |
Jokisaari, J. Ingman, P. Lounila, J. Pulkkinen, O. Diehl, P. Muenster, O. |
| Verschenen in: |
Molecular physics |
| Paginering: | Jaargang 78 (1993) nr. 1 pagina's 41-54 |
| Jaar: |
1993-01 |
| Inhoud: |
The 21Ne, 83Kr and 131Xe NMR spectra of these noble gases dissolved in various thermotropic liquid crystals were recorded in the nematic phases at varying temperatures. The spectra display splittings due to the interaction between the nuclear quadrupole moment and the electric field gradient (EFG) at the nuclear site and, consequently, allow one to investigate electric field gradients. The temperature dependence of the EFG is found to be such that the field gradient arising from the electric multipoles of the liquid crystal molecules is not sufficient alone to explain the observations, but one additional contribution has to be taken into account. The quadrupole couplings were analysed in terms of a model based on the contributions from the liquid crystal molecules and from the deformation of the electron cloud due to the collisions of the atoms with liquid crystal molecules. The model provides fairly detailed information on the EFG contributions as well as on the liquid crystal order. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 4 van 20 gevonden artikelen
| << vorige | volgende >> |