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Small diffusion coeffs. can be measured by using populations of singlet states that have a relaxation time const., Ts, which can be much longer than the longitudinal relaxation time, T1. Spatial information can be encoded with pulsed field gradients in the manner of stimulated echo sequences. Singlet states can be excited via double-quantum coherence to enhance the efficiency of phase encoding and decoding. [on SciFinder (R)]
David Lyndon Emsley, Marinella Mazzanti, Yu Rao, Marcel Levien, Pragati Pandey
Tom Hilbert, Bénédicte Marie Maréchal, Thomas Yu, Tommaso Di Noto, Lina Bacha, Jocelyn Philippe, Natalia Pato Montemayor, Emilie Claire Sleight
Nicola Marzari, Iurii Timrov, Lorenzo Monacelli