RICHARDSON CONSTANT
Definition
The <RICHARDSON CONSTANT> is a <Property> that is the <THERMIONIC CURRENT DENSITY> for a <METAL> . This may be calculateds as J = A.T^2.exp(-PHI/(k.T)) where T is the thermodynamic <TEMPERATURE> , k is the <BOLTZMANN CONSTANT> and PHI is the work function. Defined in ISO 80000-12 (2009) 12-27