Task id14244
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Product description
Derive the Richardson-Deshman formula that determines the current density of electrons emitted by the thermionic cathode J = AT2exp(-j/kBT), where the constant A = 4пmekB2/h3 = 120 • 104 A/(m2K2). The value j is the work function, which depends on the cathode material and on the state of the surface of the material and is usually expressed in eV.
Additional information
Detailed solution. Format gif