Abstract

It is shown that by varying pulse lengths and delay times in electron spin resonance microwave pulse sequences, designed to enhance C13 nuclear magnetic resonance signals in diamond, and measuring the resulting C13 nuclear magnetic resonance signal, the paramagnetic impurity concentration, electron spin–spin and spin-lattice relaxation times in the laboratory and rotating frames, as well as the electron-nuclear interaction time, can be obtained. It is also shown that the maximum C13 polarization at a specific microwave frequency is dependent on the electron spin-lattice relaxation times in the laboratory and rotating frames.

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