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Table 2.

List of derived parameters.

Symbol Definition Expression
R0 Collision radius β 1 β 4 c t off β 4 β 1 $ \dfrac {\beta _1\beta _4 c t_\mathrm {off}}{\beta _4-\beta _1} $
χ Radial width ratio Δ 0 , 1 Δ 0 , 4 $ \dfrac {\Delta _{0,1}}{\Delta _{0,4}} $
au Proper speed ratio u 4 u 1 > 1 $ \dfrac {u_4}{u_1}>1 $
f Proper density ratio n 4 n 1 = χ E k 0 , 4 E k 0 , 1 Γ 1 ( Γ 1 1 ) Γ 4 ( Γ 4 1 ) $ \dfrac {n^{\prime}_4}{n^{\prime}_1}=\chi \dfrac {E_{\mathrm {k}0,4}}{E_{\mathrm {k}0,1}}\dfrac {\Gamma _1(\Gamma _1-1)}{\Gamma _4(\Gamma _4-1)} $

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