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Quantum ideal-gas statistics

Classical limit of Bose--Einstein and Fermi--Dirac statistics

{title2=$n=g_s(2\pi mk_BT/h^2)^{3/2}e^{(\mu-mc^2)/(k_BT)}$}

Integrating <Maxwell–Boltzmann statistics> over momentum for <nonrelativistic particles> of mass $m$, spin-state count $g_s$, and energy $mc^2+p^2/(2m)$ gives
$$
n=g_s\left(\frac{2\pi mk_BT}{h^2}\right)^{3/2}
e^{(\mu-mc^2)/(k_BT)}.
$$

Nonrelativistic Maxwell--Boltzmann number density

Deuterium equilibrium abundance

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Nonrelativistic Maxwell--Boltzmann number density

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Nonrelativistic Maxwell--Boltzmann number density

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