Suter, DieterSchenker, K. V.Pines, A.2008-05-292008-05-292004-07-13Suter, D.; Schenker, K. V.; Pines, A.: Theory of broadband heteronuclear decoupling in multispin systems. In: Journal of Magnetic Resonance Nr. 1, Jg. 73(1987), S. 90-98.http://hdl.handle.net/2003/2532210.17877/DE290R-3486The Waugh theory of broadband decoupling in NMR for I-S Spin 1/2 pairs is extended to arbitrary spin systems. It is shown that complete decoupling is achieved over a certain bandwidth if the irradiation scheme generates an average Hamiltonian for the I spins whose eigenvectors and eigenvalues are independent of resonance offset. If the observed S spins are only weakly coupled, it is possible to calculate the resulting spectrum directly from the offset dependence of the average Hamiltonian of the isolated I-spin system under the influence of the periodic decoupling sequence. The treatment applies to indirectly observed multiple-quantum transitions as well as to directly observable single-quantum resonance lines.enElsevier53010.1016/0022-2364(87)90227-7article (journal)