| 1. |
- Brodin, Gert, et al.
(author)
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A new decay channel for upper-hybrid waves
- 2016
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In: Physica Scripta. - : IOP Publishing. - 0031-8949 .- 1402-4896. ; 91:10
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Journal article (peer-reviewed)abstract
- We look here at a three-wave interaction process involving only electrostatic waves in an electron plasma with stationary ions. Special attention is given to the case with an upper-hybrid wave as a pump wave, where a new decay channel is pointed out. The corresponding growth rate is calculated.
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| 2. |
- Brodin, Gert, et al.
(author)
-
A simple electron plasma wave
- 2017
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In: Physics Letters A. - : Elsevier BV. - 0375-9601 .- 1873-2429. ; 381:11, s. 1033-1035
-
Journal article (peer-reviewed)abstract
- Considering a class of solutions where the density perturbations are functions of time, but not of space, we derive a new exact large amplitude wave solution for a cold uniform electron plasma. This result illustrates that most simple analytical solutions can appear even if the density perturbations are large.
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| 3. |
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| 4. |
- Brodin, Gert, et al.
(author)
-
Nonlinear dynamics of a cold collisional electron plasma
- 2017
-
In: Physics of Plasmas. - : AIP Publishing. - 1070-664X .- 1089-7674. ; 24:12
-
Journal article (peer-reviewed)abstract
- We study the influence of collisions on the dynamics of a cold non-relativistic plasma. It is shown that even a comparatively small collision frequency can significantly change the large amplitude wave solution.
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| 5. |
- Brodin, Gert, et al.
(author)
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Nonlinear wave interactions of kinetic sound waves
- 2015
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In: Annales Geophysicae. - : Copernicus GmbH. - 0992-7689 .- 1432-0576. ; 33:8, s. 1007-1010
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Journal article (peer-reviewed)abstract
- We reconsider the nonlinear resonant interaction between three electrostatic waves in a magnetized plasma. The general coupling coefficients derived from kinetic theory are reduced here to the low-frequency limit. The main contribution to the coupling coefficient we find in this way agrees with the coefficient recently presented in Annales Geophysicae. But we also deduce another contribution which sometimes can be important, and which qualitatively agrees with that of an even more recent paper. We have thus demonstrated how results derived from fluid theory can be improved and generalized by means of kinetic theory. Possible extensions of our results are outlined.
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| 6. |
- Brodin, Gert, et al.
(author)
-
Three-wave coupling coefficients for perpendicular wave propagation in a magnetized plasma
- 2015
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In: Physics of Plasmas. - : AIP Publishing. - 1070-664X .- 1089-7674. ; 22:10
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Journal article (peer-reviewed)abstract
- The resonant interaction between three waves in a uniform magnetized plasma is reconsidered. Starting from previous kinetic expressions, we limit our investigation to waves propagating perpendicularly to the external magnetic field. It is shown that reliable results can only be obtained in the two-dimensional case, i.e., when the wave vectors have both x and y components.
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| 7. |
- Karimov, A. R., et al.
(author)
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The processes of nonequilibrium exchange in rotating plasma flows
- 2016
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In: II CONFERENCE ON PLASMA & LASER RESEARCH AND TECHNOLOGIES. - : IOP Publishing.
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Conference paper (peer-reviewed)abstract
- The mechanisms of energy/momentum exchange in rotating and compressing plasma flows have been discussed. It has been shown that such flows are capable of transforming the energy of different degrees of freedom into the energy of one degree owing to the interaction of the coupled nonlinear radial, axial and azimuthal electron-ion oscillations. These processes may lead to the additional acceleration of the flow in azimuthal or axial direction so they might be instrumental for the creation of space thrusters employing pulse transformations for propulsion.
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| 8. |
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