Table 4
Theoretical versus experimental values of the tearing growth rate τ.
| Θ | ωce/ωpe | ΓeUe/c | L/de | n t | n x | ρ sp | Box size in de | τsimu/Tpe | τtheory/Tpe | (τsimu − τtheory)/τsimu |
|
|
||||||||||
| 0.01 | 0.2 | 0.14 | 0.72 | 250 | 15 | 1000 | 53 × 0.3 × 42 | 5.4 | 5 | 8% |
| ′′ | ′′ | ′′ | ′′ | ′′ | ′′ | ′′ | 80 × 0.3 × 42 | 5.4 | ′′ | 8% |
|
|
||||||||||
| 0.1 | 0.61 | 0.40 | 0.83 | 250 | 15 | 1000 | 53 × 0.3 × 42 | 2.1 | 2 | 5% Fig. 8 |
|
|
||||||||||
| 1 | 1.82 | 0.68 | 1.62 | 250 | 15 | 1000 | 53 × 0.3 × 42 | 2.5 | 2.7 | 7% |
Notes. Tpe is the plasma period comprising all electrons, and de the plasma skin depth based on this period. We recall that de corresponds to nx cells. Other simulations were performed in the case Θ = 0.01, but with an initial setup slightly out of equilibrium, and they presented variations in the growth rates of less than 3% when nx, nt, and ρsp were doubled, or when ρsp was divided by two.
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