Autor(en): | Suter, Dieter Liu, S. B. Pines, A. |
Titel: | Multiple quantum NMR excitation with a one-quantum Hamiltonian |
Sprache (ISO): | en |
Zusammenfassung: | Excitation of multiple quantum coherence in dipolar coupled spin systems is usually accomplished with a two-quantum multiple pulse sequence which can be time reversed by means of a 90° phase shift. The application of such an excitation scheme to a spin system in thermal equilibrium excites only even orders of multiple quantum coherence. We demonstrate here time reversible pulse sequences that excite all orders of coherence by creating a pure one-quantum average hamiltonian. We also describe pulse schemes which can be used to create pure one- or two-quantum average hamiltonians with variable scaling between +1 and −1. These excitation schemes are relevant to the study of spin clustering by multiple quantum NMR. |
URI: | http://hdl.handle.net/2003/25321 http://dx.doi.org/10.17877/DE290R-4001 |
Herausgeberlink: | http://e3.physik.tu-dortmund.de/~suter/eprints/SingleQuantumExcitation.pdf |
Erscheinungsdatum: | 2001-11-16 |
Provinienz: | Elsevier |
Zitierform: | Suter, D.; Liu, S. B.; Pines, A.: Multiple quantum NMR excitation with a one-quantum Hamiltonian. In: Chemical Physics Nr. 1, Jg. 114(1987, S. 103-109. |
Enthalten in den Sammlungen: | Suter, Dieter Prof. Dr. |
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