Figure 5
From: Solid cryogen: a cooling system for future MgB2 MRI magnet
(a) Resistance versus temperature curve, (b) voltage versus current curve (at 28 K), (c) current and temperature versus time curves (at 28 K) of the solenoid MgB2 coil, (d) temperature versus time curves of the cooling system, and (e) temperature versus time curves of the temperatures on the coil after turning-off the cryocooler at ~28 K.
