Fig. 1

Partial temperatures of i-mers. Evolution of the partial temperatures, T _i , of i-mers for a granular gas of 10⁷ particles for λ₁ = λ₂ = 4/3, a = 0.1, and ε = 0.99. Initially, the gas of monomers has the temperature, T₁(0) = 1. The dashed lines show the limiting cases of a hot gas (regime of non-aggregative cooling) when the temperature follows Haff’s law, T ~ t⁻², and cold gas when almost all collisions are aggregative and T ~ t^−1/3. Both cases are in agreement with the theory, see Eqs. (11) and (25)