  A laboratory simulation of astrophysical processes is one of the intensively
developed areas of plasma physics. A new series of experiments has been
launched recently on the Plasma Focus type facility in NRC Kurchatov Institute.
The main goal is to study the mechanisms of the jet stabilization, due to which
it can propagate at distances much greater than their transverse dimensions.
The experiments with stationary gas filling revealed regimes in which a
narrowly collimated plasma jet was formed, the head of which was no wider than
several centimeters at jet propagation distances of up to 100 cm. The PF-1000
(IFPiLM, Warsaw, Poland) and KPF-4 (SFTI, Sukhum, Abkhazia) experiments are
aimed at creating profiled initial gas distributions to control the conditions
of plasma jet propagation in the ambient plasma. Estimations of the
dimensionless parameters, i.e. the Mach, Reynolds, and Peclet numbers which
were achieved during the experiments, showed that the PF-facilities can be used
for the YSO jets modelling. The future experiments, which can allow one to
understand the nature of the stable plasma ejections observed in many
astrophysical sources, are discussed.
