The interaction of a high-intensity laser pulse with plasma in a laser fusion in the presence of an obliquely external magnetic field

In recent years, the interaction of ultrashort laser pulses with solid target for applications in inertial
confinement fusion project has been regarded. In order to ignite a target fuel capsule in an inertial
confinement fusion by laser, the central region as called hot spot must be heated as much possible to
maximize the initial self-heating effect. In this article, to achieve the fusion of hydrogen-boron fuel is
used the model block acceleration of plasma by laser-plasma interaction. By considering Maxwell's and
hydrodynamic equations, it can be observed that with the increase of obliquely external magnetic field ,
the pulse is focused and the dielectric permittivity of the plasma increases. It is obtained that with
increasing the Ѳ -angle, the angle between B0 and x-axis, the oscillations of the electron density
distribution and the dielectric permittivity of the plasma are increased. So, in these conditions without
the use of a powerful laser pulses and just by changing the angle, the threshold energy in hot spot
decreases. Besides, the thermal conductivity of electrons reduced, it can be said that the threshold
energy decreases and this represents an improvement of conditions for fusion.