Figure 1.

The phase diagram of CRU operation predicted by analytical Ising model. Relations of spark termination regimes and types of Ca leaks with respect to phase transitions via h polarity reversal and order-disorder transition via β^∗ are shown. The different regimes of CRU operation with phase transition boundaries are shown by different shades. In the subcritical β regime, the the shade shows the degree of leak, which is gradual (i.e., not a phase transition). To see this figure in color, go online.