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Surface NMR Using Laser-Polarized129Xe under Magic Angle Spinning Conditions

✍ Scribed by E. Brunner; R. Seydoux; M. Haake; A. Pines; J.A. Reimer

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
101 KB
Volume
130
Category
Article
ISSN
1090-7807

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✦ Synopsis

NMR signals of surface nuclei of solids may be enhanced by the a spin I, the macroscopic magnetization M I of the spins I transfer of spin polarization from laser-polarized noble gases. Until may deviate from its equilibrium value M 0 I . According to now such experiments have not been feasible under conditions of the well-known Solomon equations ( ), M I approaches an magic angle spinning. In the present contribution it is shown that equilibrium value »M I … given by laser-polarized 129 Xe can be inserted into a spinning rotor under continuous-flow conditions using helium as a carrier gas. Effective adsorption of xenon on the sample occurs at temperatures of about

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