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Isothermal compressibility

Values for calculation

$π$
$γ_{ππ}$
$γ_π$
$p$ $\mathrm{Pa}$
$γ^r_{ππ}$
$γ^r_π$
$\text{Region}$

Calculation

Isothermal compressibility

$\text{if }\ \text{Region}= 1$
$$κ_T=\cfrac{-\cfrac{π\cdot γ_{ππ}}{γ_π}}{p}$$
$\text{else if }\ \text{Region}= 2$
$$κ_T=\cfrac{1-π^2\cdot γ^r_{ππ}}{\left(1+π\cdot γ^r_π\right)\cdot p}$$
$\text{else}$
$$κ_T=0$$