[en] The aim of the school is to offer high-level pedagogical courses on a wide range of liquid- and solid-state NMR concepts and techniques: theory, instrumentation (magnets and probes), data acquisition, processing and analysis, measurement of dipolar and quadrupolar couplings, spin relaxation and hyper-polarization. This document gathers only the slides of most presentations

[en] The resonance energies and widths for doubly-excited (1s²3d², 3p4f, 3d4d) ¹G^e states of beryllium-like ions are determined by calculating the density of resonance states using the stabilization method. A model potential is used to represent the interaction between the outer electrons and the core electrons. Products of Slater orbitals are used to represent the two-electron wave functions. We present results for some lower-lying doubly-excited states for Z = 5-10. Comparisons are made with other calculations in the literature. (orig.)

[en] Resonant x-ray diffraction from V₂O₃ which has been observed at charge-forbidden reflections (h + k + l odd) is here attributed to orbital moments on the vanadium ion. Furthermore, it is argued that the contribution to intensity as a function of x-ray energy seen in the experiment on the low energy side of the electric dipole (E1) resonance is due to an electric quadrupole (E2) resonance. The absence of the E1 resonance for h odd, and appearance of the E2 resonance at h odd and h even is accounted for in the calculated structure factor. For h odd the structure factor is proportional to the octupole moment of the vanadium ion, which is estimated to have a magnitude similar to that of the orbital angular momentum. In the case of E2 resonant x-ray Bragg diffraction from hematite the calculated structure factor contains three orbital moments, two of odd rank and one of even rank. The calculated polarization dependence and azimuthal-angle scans are in complete accord with experimental findings. The contribution of even and odd rank moments is shown to make scattering depend on circular polarization. (author)

[en] Molecular dynamics simulations are carried out to investigate the pattern formation in vapor phase Nucleation. We focus the evaporation process in the vapor phase nucleation. In the evaporation processes for the low density Lennard-Jones cluster, which is scaled for position from equilibrium cluster, we observed the confeitolike cluster, which is composed of one core and a few horns. (author)

[en] We describe a perturbative approach to the solution of the coupled outer-region equations for the electron-impact excitation of neutral atoms, and which we have implemented within the computer code STGF. We compare the results from STGF for neutral Be and H with those that we have obtained with the non-perturbative R-matrix propagator code FARM. The excellent agreement obtained in general here points the way to the future extension of related codes for the calculation of energy levels and radiative rates in negative ions, photo-detachment cross sections and free-free electron transition data in the presence of a neutral atom. (author)

[en] Energy levels, radiative transition probabilities and autoionization rates for Be-like Ne (Ne⁶⁺) including 1s²2pnl (n=2-9, l≤n-1) and 1s²3l'nl (n=3-6, l≤n-1) states are calculated. Two theoretical methods, the perturbation theory Z-expansion (MZ code) method and the multi-configurational Hartree-Fock (Cowan code) method, are used for the calculations. Autoionizing levels above the 1s²2s and 1s²2p thresholds are considered and their contributions computed. The state-selective dielectronic recombination rate coefficients from Li-like Ne (Ne⁷⁺) ions to Be-like Ne (Ne⁶⁺) ions for bound states of Ne⁶⁺ ions are obtained. Configuration mixing plays an important role for the principal quantum number, n, distribution of the dielectronic recombination rate coefficients for n≤6 levels. The orbital angular momentum quantum number, l, distribution of the rate coefficients shows a peak around l=4-5. The rate coefficients for the excited states with higher n are extrapolated using a scaling law. The total dielectronic recombination rate coefficients are derived as a function of electron temperature. (author)

[en] We study a model describing a rotating linear rigid molecule interacting with a Bose-Einstein condensate. A generalization of the Landau criterion is established and gives the limit for which the molecule moves translationally and rotationally into the condensate without any friction. In particular, we show that the rotational energy released by the molecule is large enough to eject one atom out of the condensate. The detection of such an atom provides a direct measurement of the low-energy cross section of the scattering with the rotating molecule. Finally, increases of inertia and of centrifugal distortion of the molecule due to the surrounding condensate are estimated and compared with the experimental data obtained for a He⁴ droplet. (author). Letter-to-the-editor

[en] We determine, both experimentally and theoretically, the fully resolved fivefold differential cross section (5DCS) of double ionization of helium by 5.6 keV electron impact. Symmetric energy sharing between the two ejected electrons is investigated at the excess energy of 8 and 20 eV with 0.22 and 0.24 au momentum transfer, respectively. Absolute 5DCS are determined by normalizing the experimental data to the well established single-ionization cross sections. The calculation is performed by using the convergent close-coupling method for the interaction between the two slow ejected electrons, together with the first Born approximation for the interaction of the fast incident electron with the atom. Experimental and theoretical 5DCS tend to agree in shape but disagree in magnitude by factors of three and 14 for the 20 and 8 eV excess energies, respectively. The small momentum transfer invites absolute comparison of the present electron-impact double-ionization results with the corresponding double-photoionization experiment and theory. Theoretically, the momentum transfer is sufficiently close to zero to show the scaling between the two scattering processes. This smallness of the momentum transfer also makes the calculated 5DCS nearly invariant with respect to simultaneous inversion of the momenta of the two ejected electrons. (author)

[en] It is shown that recently measured cross sections for double ionization of negative ions (H^-, O^- and C-⁾ possess a universal shape when plotted in suitable dimensionless units. The shape can be represented with a simple analytical function, following the same principles as those which have been utilized during the establishment of a universal shape function for single ionization (Rost and Pattard 1997 Phys. Rev. A 55 R5). Thereby, it is demonstrated that direct double ionization dominates the cross section for the targets considered. (author). Letter-to-the-editor

[en] The 4d inner-shell absorption spectra of Te, Te⁺, Te²⁺ and Te³⁺ have been recorded with the dual laser produced plasma technique. Discrete structure due to 4d→5p transitions has been observed in the 37-45 eV region and identified using Hartree-Fock calculations within the superposition of configurations method. For comparisons of theoretical and experimental spectra, the method approximates a calculation of the resonant part of the photoionization cross section. It was also necessary, especially in the higher ion stages, to include absorption from excited states of the ground configurations. From these, synthetic spectra were produced which generally agree well with the experimental data. (author)