Derivation of Ee in Inverse Compton Scattering

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Homework Help Overview

The discussion revolves around deriving the energy of a recoiled electron in the context of inverse Compton scattering, where the energies of the incoming photon and electron are known. Participants are exploring how to express the energy of the recoiled electron as a function of the incoming electron's properties.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants are attempting to reference existing formulas and concepts related to Compton scattering. There are questions about how to incorporate the Doppler effect and the Lorentz factor (gamma) into the energy calculations. Some participants express uncertainty about how to transition from the rest frame of the electron to the lab frame.

Discussion Status

The discussion is ongoing, with participants seeking clarification and hints on how to proceed with their derivations. Some guidance has been offered regarding the importance of showing effort in the homework area, and there is an acknowledgment of the need for further exploration of the problem.

Contextual Notes

Participants are reminded of the homework guidelines, which emphasize the necessity of demonstrating prior attempts and understanding before seeking assistance. There is a mention of the potential complexity introduced by the Doppler effect in the calculations.

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Sorry if that seems a bit coarse. After posting I noticed this was your first post in the homework area. Didn't mean to shoo you away. Anyway, the homework area has some guidelines with mandatory parts. Showing an effort is the main one. To prevent us from being used as workhorses instead of helpers. :wink:
 
BvU said:
Sorry if that seems a bit coarse. After posting I noticed this was your first post in the homework area. Didn't mean to shoo you away. Anyway, the homework area has some guidelines with mandatory parts. Showing an effort is the main one. To prevent us from being used as workhorses instead of helpers. :wink:
Sorry, I just wanted to avoid redundancy as I already posted the link.

What I have already in the reference frame of the e- for the photon

E_0 = \gamma E_0^* (1- \frac{u}{c}cos\theta_0^*) \\<br /> <br /> E_1 = \frac{E_0}{1+ \frac{E_0}{(m_e*c^2)}(1-cos\phi)} \\<br /> <br /> E_1^*= \gamma E_1(1- \frac{u}{c}cos\theta_0^*)where * denotes the lab reference frame

\theta_0^* the angle between the direction of the e- and the incoming photon in the lab frame

\phi the angle between the incoming and outgoing photon in the rest frame of the e-..

Now, I cannot figure out how to get the energy of the electron in the lab frame...
 
Last edited:
Hi

Any hint for this ?

Thanks again
 
@Orodruin : can you help this guy out ? I don't get much further than googling to see what limits can be taken safely. (Sorry Alk...)
 
BvU said:
@Orodruin : can you help this guy out ? I don't get much further than googling to see what limits can be taken safely. (Sorry Alk...)
I think what I am not sure about, is how to derive the Ee given the fact that the the photon energy has to be corrected with the Doppler term and has been "boosted" by the gamma...
 
Hi

@Orodruin @BvU sorry for keep bugging you again, but any help would be highly appreciated
 

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