Full-text resources of PSJD and other databases are now available in the new Library of Science.
Visit https://bibliotekanauki.pl

Refine search results

Journals help

  1. 3 Acta Physica Polonica A

Years help

  1. 1 1992

  2. 2 1991

Authors help

  1. 3 Murawski K.

Preferences help
Polish version English version Language
enabled [disable] Abstract
Number of results

Results found: 3

Number of results on page
first rewind previous Page / 1 next fast forward last

Search results

Search:
in the keywords:  03.40.Kf
help Sort By:

help Limit search:
first rewind previous Page / 1 next fast forward last
1
Content available remote

Alfvén-Magnetosonic Waves Interaction

100%
Murawski K.
Acta Physica Polonica A
|
1992
|
vol. 81
|
issue 3
335-351
EN
The nonlinear propagation of the Alfvén and magnetosonic waves in the solar corona is investigated in terms of model equations. Due to viscous effects taken into account the propagation of the Alfvén wave itself is governed by a Burgers-type equation. The Alfvén waves exhibit a tendency to drive both the slow and fast magnetosonic waves. For this process model equations are a generalization of the Zakharov equations. The propagation of the magnetosonic waves is described by linearized Boussinesq-type equations with ponderomotive terms due to the Alfvén wave. Both long and short Alfvén waves are considered. Also the limits of the slow and fast modes are investigated. An approximate shock wave solution has been found for a vertically propagating slow mode. Numerical results for the fast mode propagating perpendicular to the magnetic field show the effect of inhomogeneity and pumping on a shock as the solution of the homogeneous Burgers equation.
2
Content available remote

Modified Nonlinear Schrödinger Equation for Nonlinear Waves in Optical Fibres

80%
Murawski K.
Acta Physica Polonica A
|
1991
|
vol. 80
|
issue 4
485-493
EN
A new model equation governing the propagation of nonlinear pulses in optical fibres has been derived on the assumption of a saturated nonlinearity of the refractive index. This equation is a combination of the exponential nonlinear Schrödinger equation and the derivative one. It is valid for the long fibres. A modulational stability has been calculated to find out a cut-off in an angular frequency of a carrier wave. Moreover, it has been shown that the equation possesses family of stationary solutions. An initial value problem has been discussed on the basis of the implicit pseudo-spectral scheme.
3
Content available remote

Modulational Instability of Nonlinear Exponential Schrödinger Waves

80%
Murawski K.
Acta Physica Polonica A
|
1991
|
vol. 80
|
issue 4
495-501
EN
Modulational instability of a plane wave of the nonlinear Schrödinger equation is discussed numerically on the basis of the pseudo-spectral method. The linear theory is verified and influence of the attenuation is considered.
first rewind previous Page / 1 next fast forward last
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.