A magic-angle rotor for NMR using a forced gas bearing |
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| Authors: | Giovanni Balimann Michael JS Burgess Robin K Harris Andrew G Oliver Kenneth J Packer Barry J Say Steven F Tanner Roger W Blackwell Leonard W Brown Alan Bunn Michael EA Cudby James W Eldridge |
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| Institution: | School of Chemical Sciences, University of East Angila, Norwich NR4 7TJ, UK;ICI Ltd., Plastics Division, Bessemer Road, Welwyn Garden City, Hertfordshire, UK |
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| Abstract: | A new design for a rotor system to achieve spinning rates of the order of 3 kHz is presented. The design uses a simple cylindrical rotor, and involves a forced air bearing over the whole cylindrical surface. The jets of gas which make this bearing also cause the spinning. Powder-filled hollow rotors spin smoothly, and are convenient to make and use. The whole system is suitable for magic angle rotation, such as is needed to obtain high-resolution NMR spectra of solids. Examples of spectra obtained using the device are illustrated and discussed. |
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