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| 2. |
- Harsanyi, I., et al.
(author)
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On the hydration structure of LiCl aqueous solutions : A Reverse Monte Carlo based combination of diffraction data and Molecular Dynamics simulations
- 2011
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In: Journal of Molecular Liquids. - : Elsevier BV. - 0167-7322 .- 1873-3166. ; 158:1, s. 61-67
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Journal article (peer-reviewed)abstract
- Reverse Monte Carlo (RMC) calculations have been carried out on aqueous LiCl solutions at several concentrations, comparing experimental X-ray and neutron diffraction data with partial radial distribution functions (prdf) from Molecular Dynamics (MD) simulations based on conventional ion-ion, ion-water, and water-water pair potentials. The RMC calculations indicate that the hydration shell of the Li+ ions could be even more structured than computer simulations predict, containing at high concentrations unusually few water molecules, of the order of 2 to 3. Concerning the consistency between the structures based on potential models and diffraction data: the ion-water partial radial distribution functions (prdf) from MD are found to be consistent with the experimental data whereas the water-water and ion-ion partials are more problematic. The most serious deficiency is that at high salt concentrations the O-O prdf cannot be made consistent with the present X-ray diffraction data.
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| 3. |
- Mollén, Albert, 1985, et al.
(author)
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Impurity peaking in tokamaks
- 2013
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In: Proceedings of 40th European Physical Society meeting on Plasma Physics. - 9781632663108 ; 2, s. 1034-1037
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Conference paper (peer-reviewed)
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| 4. |
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| 5. |
- Moradi, Sara, 1981, et al.
(author)
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Core micro-instability analysis of JET hybrid and baseline discharges with carbon wall
- 2014
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In: Nuclear Fusion. - : IOP Publishing. - 1741-4326 .- 0029-5515. ; 54:12, s. 123016-
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Journal article (peer-reviewed)abstract
- The core micro-instability characteristics of hybrid and baseline plasmas in a selected set of JET plasmas with carbon wall are investigated through local linear and non-linear and global linear gyro-kinetic simulations with the GYRO code (Candy and Belli 2011 General Atomics Report GA-A26818). In particular, we study the role of plasma pressure on the micro-instabilities, and scan the parameter space for the important plasma parameters responsible for the onset and stabilization of the modes under experimental conditions. We find that a good core confinement due to strong stabilization of the micro-turbulence driven transport can be expected in the hybrid plasmas due to the stabilizing effect of the fast ion pressure that is more effective at the low magnetic shear of the hybrid discharges. While parallel velocity gradient destabilization is important for the inner core, at outer radii the hybrid plasmas may benefit from a strong quench of the turbulence transport by E×B rotation shear.
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