Broadband excitation in solid-state NMR of paramagnetic samples using Delays Alternating with Nutation for Tailored Excitation (¡®Para-DANTE¡¯)

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• 作者：Diego Carnevale^a ; ^{diego.carnevale@epfl.ch} ; Veronika Vitzthum^a ; Olivier Lafon^b ; Julien Tré ; bosc^b ; Jean-Paul Amoureux^b ; Geoffrey Bodenhausen^a ; ^c ; ^d ; ^e
• 刊名：Chemical Physics Letters
• 出版年：2012
• 出版时间：20 November, 2012
• 年：2012
• 卷：553
• 期：Complete
• 页码：68-76
• 全文大小：1246 K

文摘

This Letter shows that interleaved sequences of short pulses in the manner of ¡®Delays Alternating with Nutation for Tailored Excitation¡¯ (DANTE) with N = 1, 2, 3 ¡­ equidistant pulses per rotor period extending over K rotor periods can be used to excite, invert or refocus a large number of spinning sidebands of spin-1/2 nuclei in paramagnetic samples where hyperfine couplings lead to very broad spectra that extend over more than 1 MHz. The breadth of the response is maintained for rf-field amplitudes as low as 30 kHz since it results from cumulative effects of individual pulses with very short durations.