High resolution solid-state N.M.R. Averaging of second-order effects by means of a double-rotor

Molecular Physics

Volumn 65, Issue 4, 1988, Pages 1013-1018

  Samoson, A ^a,b   Lippmaa, E ^a,b   Pines, A ^a,b  

^a UNIVERSITY OF CALIFORNIA   (United States)

^b ESTONIAN ACADEMY OF SCIENCES   (Estonia)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 84891567947     PISSN: 00268976     EISSN: 13623028     Source Type: Journal    
DOI: 10.1080/00268978800101571     Document Type: Article

References (38)

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15. Pines, A., 1988, 9th European Experimental NMR Conference, Bad-Aussee, Austria, May.
16. Pines, A., 1988, 30th Rocky Mountain Conference, Denver, Colorado, July-August. Chingas, G. C, et al., 1988, New Angles in Sample Spinning, 24th Ampère Congress, Poznan, Poland, August-September, LBL Abstract No. 25391.
17. The theory underlying this approach is described in Llor, A., and Virlet, J., Chem. Phys. Lett, (to be published).
18. Lee, C. J., Samoson, A., Sun, B. Q., Terao, T., and Pines, A., Proc. natn. Acad. Sci. (to be published), LBL Preprint No. 25683.
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23. Samoson, A., and Pines, A. (to be published).
24. Smith, R. C, 1972, Am. J. Phys., 40,199.
25. The centreband linewidth is determined largely by incompletely averaged dipolar couplings and by third-order quadrupolar broadening. The sideband envelope is of course approximated by a sum of spectra from the rapidly rotating small rotor over the orientations of its axis on the cone.
26. Llor, A., and Virlet, J. (to be published).
27. Chingas, G. C, Mueller, K. T., Sun, B. Q., Terao, T., and Pines, A. (to be published).
28. There is a continuum of solutions (6u62,k) to the equations: P2(cos θ1) = —\k\P2(cos θ2), P4(cos θ2) = —\k\P4(cos θ2).
29. Lee, C. J., 1987, Ph.D. Thesis, Berkeley, LBL Preprint No. 24418.
30. Bax, A., Szeverenyi, N. M., and Maciel, G. E., 1983, J. magn. Reson., 55, 494.
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34. Harris, R. K., 1988, J. magn. Reson., 78, 389.
35. VanderHart, D. L., Earl, W. L., and Garroway, A. N., 1981, J. magn. Reson., 44, 361.
36. Alla, M., and Lippmaa, E., 1982, Chem. Phys. Lett., 87, 30.
37. The axis of a single rotor can be made to precess in (for example) an Andrew-type geometry [1]. Indeed, it has long been known (Schaefer, J. (private communication), Kenwright, A. M., and Harris, R. K. (private communication), VanderHart, D. L., et al. in [16]) that inadvertent ‘wobbling’ of the spinner axis gives rise to additional sidebands in MAS studies.
38. Tycko, R., 1988, Phys. Rev. Lett., 60, 2734.