Laser-magnetized plasma interaction: inverse bremsstrahlung absorption with non-Maxwellian electrons

چکیده مقاله

In this paper, q-parameterized nonextensive distribution is used to investigate various faces of the laser-magnetized plasma interactions including Inverse Bremsstrahlung Absorption (IBA). IBA process serves as an important way of delivering laser energy to plasma in laser fusion interactions. To do this, the Fokker-Planck equation and the q-nonextensive distribution function are used while a magnetic field is taken into account. As the maximum electron velocity in the limit of q → 1 goes to infinity, the q-nonextensive distribution function reduces to the standard Maxwelle-Boltzmann distribution. In this case, Laser and plasma parameters such as electron temperature, laser wavelength and nonextensivity degree are studied on IBA in magnetized plasma. Considering the existence of a static magnetic field, it is indicated that the IBA increases in the critical layer with a decrease in the laser wavelength and the strength of non-extensivity (q). But IBA varies slowly with the static magnetic field. Some instability can occur through the inverse bremsstrahlung absorption. © The Author(s) 2024.