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Table 1

Characteristic core formation conditions for the Hα line at t = 1 s.

Flare model ntot(τ = 1) (cm−3) χ(τ = 1)
F10 7.9E + 11 0.90599 1.02E − 2
F11 2.1E + 12 0.93240 2.22E − 2
F12 5.8E + 12 0.97239 2.68E − 2

Notes. Values of the number density ntot, ionisation degree χ, and ratio ofneutral hydrogen atoms with electrons in state 3 to those with electrons in state 2 are shown for the point at which theHα line has an optical depth of τ = 1. Results are presented for the F10 (top row), F11 (middle row), and F12 (bottom row) beam models.

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