Sökning: "spinning solids"

Hittade 3 avhandlingar innehållade orden spinning solids.

  1. 1. New solid-state NMR methods for exciting and separating anisotropic interactions of spin I=1 nuclei

    Författare :Rihards Aleksis; Andrew Pell; Robert Schurko; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; solid-state NMR; quadrupolar; paramagnetic shifts; spinning solids; materials; Physical Chemistry; fysikalisk kemi;

    Sammanfattning : Solid-state NMR has become an essential tool for structural characterisation of materials, in particular systems with poor crystallinity and structural disorder. In recent years, a surge of interest has been observed for the study of paramagnetic systems, in which the interaction between nuclei and unpaired electrons allows to probe the electronic structure and properties of materials more directly. LÄS MER

  3. 2. Rotational Resonance in the Nuclear Magnetic Resonance of solids

    Författare :Torgny Karlsson; S Vega; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physical Chemistry; fysikalisk kemi;

    Sammanfattning : This thesis presents new physical phenomena in the rotational resonance NMR of magic-angle spinning solids. The theory of a new class of nuclear spin echoes is developed. LÄS MER

  4. 3. Solid state NMR of multiple-spin systems

    Författare :Mattias Edén; Joseph Virlet; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physical Chemistry; fysikalisk kemi;

    Sammanfattning : Many nuclear magnetic resonance (NMR) experiments subject the nuclear spins to time-periodic modulations, for example, mechanical sample rotation and irradiation by periodic radio-frequency pulse sequences. An efficient simulation algorithm (COMPUTE) has been proposed for calculating NMR spectra from such systems. LÄS MER