Mn concentration µM (Added µl of 0.2 mM MnCl₂)

Correlation frequency v_c /MHz

Relaxation rate when  v → ∞ α_∞/s^-1

Relaxation time when   v → ∞T1_∞/ms

              0

1.8

0.68

1470

              1        (5)

1.4

0.96

1041

              2      (10)

1.7

1.26

794

            10      (50)

0.8

3.2

312

            20     (100)

0.5

4.5

220

            40     (200)

0.6

5.7

175