This review provides information about active corpuscular diagnostic m
ethods that are introduced and used with great success in experiments
on tokamaks and stellarators. The experimental results obtained by the
se methods are presented. Attention is called to the features of exper
imental data processing. We do not pretend to provide a complete analy
sis of the present issues. The goal is to show the basic trends in the
development of active corpuscular diagnostic techniques in recent yea
rs and to consider the results of their application.