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Table 2.

Acceleration time tacc for electrons with several final energies according to Eq. (28).

E [MeV] tacc [μs] Nce
0.1 69 3.866 × 104
1.0 120 6.723 × 104
10.0 190 1.064 × 105
100.0 269 1.507 × 105
1000.0 349 1.955 × 105

Notes. The initial energy ϵ0 is assumed to be the thermal one, i.e. 1.90 keV, corresponding to a temperature of 22 MK. Nce denotes the number of cyclotron periods during the acceleration time tacc, i.e. Nce = taccωce/2π. The plasma parameters presented in Table 1 were used to calculate tacc and Nce.

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