Electron in magnetic field equation

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SUMMARY

The equation for the radius of curvature of a relativistic electron in a magnetic field is accurately represented as R = γ * m * v / (e * B), where γ is the Lorentz factor, m is the rest mass of the electron, v is its velocity, e is the electron charge, and B is the magnetic field strength. An alternative simplified formula is R (in m) = 3.336 * (E (in GeV) / B (in T)), linking energy directly to the radius of curvature. The distinction between rest mass and relativistic mass is clarified, emphasizing that physicists typically refer to rest mass in these contexts.

PREREQUISITES
  • Understanding of Lorentz factor (γ)
  • Knowledge of electron properties (mass, charge)
  • Familiarity with magnetic field concepts
  • Basic principles of relativistic physics
NEXT STEPS
  • Study the derivation of the Lorentz factor (γ) in relativistic physics
  • Explore the implications of relativistic mass versus rest mass
  • Learn about the applications of the radius of curvature in particle physics
  • Investigate the effects of magnetic fields on charged particles
USEFUL FOR

Physicists, students of physics, and anyone interested in the behavior of electrons in magnetic fields will benefit from this discussion.

ireland01
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equation for radius of curvature of relativistic electron in magnetic field?

is this correct:R = gamma * m * v / e * B

where gamma is lorentz factor, m is electron mass, v is velocity, e is electron charge and B is magnetic field strength.
 
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I use this simplified formula (E is electron's energy)
[tex] R (\textrm {in m})=3.336\;\frac{E (\textrm {in GeV})}{B (\textrm {in T})}.[/tex]
 
ireland01 said:
equation for radius of curvature of relativistic electron in magnetic field?

is this correct:


R = gamma * m * v / e * B

where gamma is lorentz factor, m is electron mass, v is velocity, e is electron charge and B is magnetic field strength. is m rest mass?
Yes, that's correct. The only difference between the relativistic and non-relativistic formulas is the gamma.

m is the rest mass of the electron. Whenever physicists refer to mass, they almost always mean rest mass. The concept of relativistic mass, while popular with the laypeople, is not a very useful one since it's basically equal to the relativistic energy.
 

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