Question: Using typical values for a barium oxide emissive material, calculate the amount of current of electrons released from a hollow cathode operating at a temperature

Using typical values for a barium oxide emissive material, calculate the amount of current of electrons released from a hollow cathode operating at a temperature of

1026

Deg. K

.

Take the emissive material area to be

52

2,

and assume that the work function of the material is affected by temperature.

Give your answer in A

.

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