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Two modestly diverging jets formed on planar targets facing each other. The time when significant overlap has already occurred is shown. The right panel is a sketch of the radial density distribution in the mid-plane. After rapid electron heating, the shock can be formed in the zone of the steepest radial gradient.
Compression ratio vs. the Mach number for three values of the parameter S ≡ n 1 /n*: S = ∞ (upper curve); S = 1 (middle curve); S = 0.5 lower curve. Initial ion temperature is zero.
Post-shock ion temperature vs. the Mach number for three values of the parameter S ≡ n 1 /n*: S = ∞ (upper curve); S = 1 (middle curve); S = 0.5 lower curve. Initial ion temperature is zero. For S = 1 and modest shock strengths, M ∼ 2.5, the ion temperature is ∼0.3ZTe , i.e., somewhat higher than Te for carbon.
Collisionality and other characteristics of two symmetric counter-propagating jets (assumptions: fully ionized carbon jets, Z = 6; ion density per jet 1018 cm−3; velocity of each jet u = 108 cm/s; electron and ion temperatures Te = Ti = 100 eV before fast electron heating; electron temperature Te = 1 keV after the fast electron heating, length-scale = 1 mm).
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