Efficient stator/rotor assembly for magic‐angle spinning NMR

Autor:	Donald W. Alderman, Charles L. Mayne, Ronald J. Pugmire, Warner R. Woolfenden, David M. Grant, Y. J. Jiang
Rok vydání:	1987
Předmět:	Nuclear magnetic resonance Magic angle Materials science Stator law Cross polarization Magic angle spinning Machine parts Mechanical engineering Instrumentation Spinning law.invention Leakage (electronics)
Zdroj:	Review of Scientific Instruments. 58:755-758
ISSN:	1089-7623 0034-6748
DOI:	10.1063/1.1139626
Popis:	A newly designed stator assembly for cylindrical spinners used in magic‐angle spinning nuclear‐magnetic‐resonance experiments is described. Separate driving and bearing gas chambers allow variable and stable spinning speeds, and this design permits easy starting and stopping of the rotor. Isolation of the chambers is achieved with the application of pressure screws rather than O rings or glue lines to avoid leakage at high gas pressures. The overall dimensions are optimal to facilitate easy assembly. Some significant modifications have been made to an earlier spinner design. These improvements give better efficiency and concentricity of the spinner. Applications are illustrated with carbon‐13 cross polarization/magic angle spinning (CP/MAS) spectra carried out at different rotor spinning rates.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9afbf85c5aff131b4fb4aebc386a6a3b https://doi.org/10.1063/1.1139626 Zobrazit plný text záznamu