The dispersion relation of an infinite form of these substances is modeled by the letters X, O, R, and L in the CMA diagram. When certain particles are “warm”, a term of 3 k-squared thermal speed squared (10[1])appears in the Bohm–Gross dispersion (10[1])relation of these substances. (10[1])The term [read slowly] “two over the thermal de Broglie (10[1])wavelength cubed” appears in an equation describing these substances (-5[1])named for (10[6])Meghnad (10[5])Saha. (10[2])Discovering low-frequency oscillations (10[1])in these substances won (10[2])Hannes Alfvén (10[2])(“all-VANE”) the 1970 Nobel Prize (-5[1])in Physics, who described (10[1])these substances (10[2])using MHD. The (10[3])Debye (“duh-BYE”) length measures how (10[1])well electric fields are screened in (-5[1])these substances, which are confined by (10[1])a (10[1])tokamak’s (10[1])magnetic (10[1])field in (10[1])a (10[1])potential (10[1])fusion (10[1])reactor design. For 10 points, name this high-energy (10[2])fourth (10[1])state (10[1])of (10[8])matter. ■END■