Publications [#234367] of Warren S. Warren

Journal Articles

1. Warren, WS; Sinton, S; Weitekamp, DP; Pines, A, Selective excitation of multiple-quantum coherence in nuclear magnetic resonance, Physical Review Letters, vol. 43 no. 24 (January, 1979), pp. 1791-1794, American Physical Society (APS), ISSN 0031-9007 [doi]
   (last updated on 2026/02/08)

   Abstract:
   Wideband selective n-quantum excitation in the NMR of coupled spins is demonstrated for the first time. By a combination of multiple pulse averaging and phase shifts a pure n-quantum excitation operator can be produced (n=2). This allows enhancement of normally weak n-quantum transitions. Selective excitation of the zero- and four-quantum transitions in benzene illustrates this approach. Extensions to selective absorption of only groups of n photons in other regimes of spectroscopy are straight-forward, in principle. © 1979 The American Physical Society.