FORMATION OF A PLASMA-JET OF MULTIPLY-CHA RGED IONS IN THE INTERACTION OF A LASER-PLASMA WITH AN EXTERNAL PULSED MAGNETIC-FIELD

A dense jet of a plasma consisting of multiply charged ions was genera ted in the interaction of a laser plasma with a strong external axial magnetic field. Images were formed by spectral lines and the soft x-ra y spectrum range of the plasma jet was obtained with a large-aperture spectrograph containing a mica crystal bent to form a spherical surfac e with a radius of R = 10 cm. A tenfold increase in the density of the He-like Mg XI plasma, compared with a freely expanding plasma, was ob served at a distance of 5 mm from the target.