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# De Broglie thermal wavelength

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The thermal de Broglie wavelength is roughly the average de Broglie wavelength of the gas particles in an ideal gas at the specified temperature. It is defined as

$\Lambda= \sqrt{\frac{h^2}{2\pi mk_BT}}$

where

• h is the Planck constant
• m is the mass
• $$k_B$$ is the Boltzmann constant
• T is the temperature.