Abstract
Weak magnetohydrodynamic turbulence in the presence of a uniform magnetic field is dominated by three-wave interactions that mediate the collisions of shear-Alfvén wave packets propagating in opposite directions parallel to the magnetic field. The scaling of three-wave couplings is calculated by asymptotic analysis and a direct numerical evaluation of the nonlinear interaction based on the reduced magnetohydrodynamic equations. A new relation is derived between the spectral index of three-wave coupling and the spectral indices of two random-amplitude wave packets. This relation has significant implications for the anisotropic energy spectrum.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 605-610 |
| Number of pages | 6 |
| Journal | Physics of Plasmas |
| Volume | 4 |
| Issue number | 3 |
| DOIs | |
| State | Published - 1997 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics