How Is Maximum Energy Loss Calculated in a Photon-Electron Collision?

  • Thread starter Thread starter AKG
  • Start date Start date
  • Tags Tags
    Collision
AI Thread Summary
To calculate the maximum energy loss in a photon-electron collision, use the formula ΔE = hf - E, where ΔE is the energy loss, h is Planck's constant, f is the photon frequency, and E is the initial energy of the electron. The frequency can be determined by dividing the speed of light by the photon wavelength. This calculation assumes a perfect elastic collision where all photon energy is transferred to the electron. However, real collisions may involve energy loss due to scattering or absorption. Understanding these principles is essential for accurately determining energy dynamics in such interactions.
AKG
Science Advisor
Homework Helper
Messages
2,559
Reaction score
4
If I'm given an energy for an electron, and a wavelength for a photon, how can I determine the maximum energy loss for the electron?
 
Physics news on Phys.org
AKG said:
If I'm given an energy for an electron, and a wavelength for a photon, how can I determine the maximum energy loss for the electron?

I am not sure of your question. Are you talking about an electron/photon collision where the electron is not strongly bound to an atom?

Free electron/photon collisions follow the Compton formula:

\triangle \lambda = \frac{h}{m_ec} (1 - cos\theta)

where \theta is the angle of the electron's velocity after the collision compared to the direction of the original photon.

The electron gains energy in the collision.

AM
 
Last edited:


The maximum energy loss for an electron in a photon-electron collision can be determined using the formula:

ΔE = hf - E

Where ΔE is the energy loss of the electron, h is Planck's constant, f is the frequency of the photon (calculated by dividing the speed of light by the wavelength), and E is the initial energy of the electron.

By substituting the given values for the energy of the electron and the wavelength of the photon, you can solve for the maximum energy loss of the electron. Keep in mind that this formula assumes a perfect elastic collision, where all of the energy of the photon is transferred to the electron. In reality, there may be some energy lost due to other factors such as scattering or absorption.
 
Thread 'Variable mass system : water sprayed into a moving container'
Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
Back
Top