We report measurements on the spin-density relaxation in the superfluid 3 He-A i phase as a function of temperature, pressure (3-28 bars), and magnetic field (0.75-14 kOe). The temperature dependence of the relaxation time shows an unexpected discontinuity near the middle of the phase and very close to T c (the zero-field transition temperature). The relaxation time changes only by about 30% over the pressure range measured. In the higher-temperature side of the phase the relaxation time is proportional to the applied field.
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