Meanings of number density in English

For both approaches, different spectroscopic parameters such as plasma temperature and electron number density were also determined.

We study first the transport properties of heavy pointlike particles in the mesoscopic solvent, as a function of their mass and number density.

Plasma temperature was estimated using a Boltzmann plot and Saha-Boltzmann plot while electron number density was estimated by Stark broadening methods and Saha-Boltzmann equations.

Interconversion between the surface bound BH, species is facile at the H and H2 number densities and temperatures typical for diamond CVD conditions.