The plasma focus discharge was studied with a specially developed Cauc
hois spectrograph and a convex-crystal spectrograph. The presence of a
pproximately 1 MeV Ta heavy ions moving toward the cathode was observe
d for the device geometry comprising the angle with a conical recess.
In the flat anode geometry fast electron beams with E(e) > 60 keV ener
gy were observed. The values of T(e) and N(e) in the dense high-temper
ature plasma produced during the pinch noncylindrical compression were
estimated.