Abstract
| Language | English |
|---|---|
| Article number | 067401 |
| Number of pages | 4 |
| Journal | Physical Review E |
| Volume | 76 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 19 Dec 2007 |
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Keywords
- plasma
- magnetosonic solitons
- quantum
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Magnetosonic solitons in a fermionic quantum plasma. / Marklund, M.; Eliasson, B.; Shukla, P. K.
In: Physical Review E, Vol. 76, No. 6, 067401, 19.12.2007.Research output: Contribution to journal › Article
TY - JOUR
T1 - Magnetosonic solitons in a fermionic quantum plasma
AU - Marklund, M.
AU - Eliasson, B.
AU - Shukla, P. K.
PY - 2007/12/19
Y1 - 2007/12/19
N2 - Starting from the governing equations for a quantum magnetoplasma including the quantum Bohm potential and electron spin-1∕2 effects, we show that the system of quantum magnetohydrodynamic (QMHD) equations admits rarefactive solitons due to the balance between nonlinearities and quantum diffraction and tunneling effects. It is found that the electron spin-1∕2 effect introduces a pressurelike term with negative sign in the QMHD equations, which modifies the shape of the solitary magnetosonic waves and makes them wider and shallower. Numerical simulations of the time-dependent system shows the development of rarefactive QMHD solitary waves that are modified by the spin effects.
AB - Starting from the governing equations for a quantum magnetoplasma including the quantum Bohm potential and electron spin-1∕2 effects, we show that the system of quantum magnetohydrodynamic (QMHD) equations admits rarefactive solitons due to the balance between nonlinearities and quantum diffraction and tunneling effects. It is found that the electron spin-1∕2 effect introduces a pressurelike term with negative sign in the QMHD equations, which modifies the shape of the solitary magnetosonic waves and makes them wider and shallower. Numerical simulations of the time-dependent system shows the development of rarefactive QMHD solitary waves that are modified by the spin effects.
KW - plasma
KW - magnetosonic solitons
KW - quantum
U2 - 10.1103/PhysRevE.76.067401
DO - 10.1103/PhysRevE.76.067401
M3 - Article
VL - 76
JO - Physical Review E
T2 - Physical Review E
JF - Physical Review E
SN - 1539-3755
IS - 6
M1 - 067401
ER -