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Amany Gouda
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I would like to calculate the electron kinetic energy ejected from a cathode as a function of the electric field and pressure without known of the temperature and velocity.
mfb said:Thermal emission?
Amany Gouda said:as a function of the electric field
Amany Gouda said:I would like to calculate the electron kinetic energy ejected from a cathode as a function of the electric field and pressure without known of the temperature and velocity.
The equation for calculating the electron kinetic energy ejected from the cathode is: KE = 1/2 * m * v^2, where KE is the kinetic energy, m is the mass of the electron, and v is the velocity of the electron.
The electron kinetic energy is directly proportional to the voltage applied to the cathode. This means that as the voltage increases, the kinetic energy of the electrons also increases.
The electron kinetic energy ejected from the cathode can be affected by the voltage applied, the distance between the cathode and anode, and the composition of the cathode material.
Calculating the electron kinetic energy ejected from the cathode is important because it helps us understand and optimize the performance of electron-based devices such as cathode ray tubes, electron microscopes, and particle accelerators. It also allows us to study the fundamental properties of electrons and their behavior in electric fields.
No, the electron kinetic energy cannot be negative. This is because kinetic energy is a measure of the energy an object possesses due to its motion, and motion cannot have a negative value. If the electron were to have negative kinetic energy, it would mean that it is moving in the opposite direction of its velocity, which is not physically possible.