1 Larmor radius and gyration frequency (10 P) Calculate the Larmor radius and the gyration frequency...

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Physics

1 Larmor radius and gyration frequency (10 P) Calculate theLarmor radius and the gyration frequency (4 P) for:

1. An electron in the Earth’s ionosphere at 300 km altitude,where the magnetic flux density is B ≈ 0.5 · 10−4 T, consideringthat the electron moves at the thermal velocity (p kT /m) with T =1000 K. (1 P)

2. An oxygen ion O+ in the Earth’s ionosphere for the sameconditions as above. Is there a difference in Larmor radius andgyration frequency between the ion and the electron? Explain. (3P)

3. A 3.5 MeV He++ ash particle in an DT fusion reactor. Use thekinetic energy of the particle to calculate the velocity, assumingthat v|| is negligible.

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