Abstract
In the region of the formation of weak and medium-strong lines, the microturbulence increases with height (V ver=0.7–0.9 km s-1, V hor= 1.1–1.5 km s-1), the macroturbulence decreases (V ver=1.6–1.4 km s-1, V hor= 2.4–1.5 km s-1), and the total velocity field (vertical component) is depth-independent (1.7 km s-1). The empirical damping constants for Fe, Ti, Cr, Ni lines are equal 1.3γ6, 1.7γ6, 1.6γ6, 1.6γ6, respectively. The correlation length (the Kubo-Anderson process has been used) in the solar photosphere is 520–550 km.
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Kostik, R.I. Damping constant and turbulence in the solar atmosphere. Sol Phys 78, 39–57 (1982). https://doi.org/10.1007/BF00151141
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DOI: https://doi.org/10.1007/BF00151141