Author/Authors :
Carnevale، نويسنده , , Diego and Vitzthum، نويسنده , , Veronika and Lafon، نويسنده , , Olivier and Trébosc، نويسنده , , Julien and Amoureux، نويسنده , , Jean-Paul and Bodenhausen، نويسنده , , Geoffrey، نويسنده ,
Abstract :
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.
