Dynamic nuclear polarization with simultaneous excitation of electronic and nuclear transitions

Details Dynamic nuclear polarization with simultaneous excitation of electronic and nuclear transitions Dynamic nuclear polarization with simultaneous excitation of electronic and nuclear transitions

2008-05-28

arxiv.org/abs/0805.4357v1

Appl. Magn. Reson. 34, 347-353 (2008)

Physics

Quantum Physics

7 pages, 3 figures

Scientific paper

10.1007/s00723-008-0112-x

Dynamic nuclear polarization transfers spin polarization from electrons to nuclei. We have achieved this by a new method, simultaneously exciting transitions of electronic and nuclear spins. The efficiency of this technique improves with increasing magnetic field. Experimental results are shown for N@C60 with continuous-wave microwaves, which can be expected to produce even higher polarization than the corresponding pulsed techniques for electron spins greater than 1/2. The degree of nuclear polarization in this case can be easily monitored through the intensities of the well resolved hyperfine components in the EPR spectrum. The nuclear spin-lattice relaxation time is orders of magnitude longer than that of the electrons.

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