VACUUM ULTRAVIOLET RADIATIVE PROPERTIES OF FORMED-FERRITE DISCHARGE WITH PREPULSE INITIATION

A study of radiative properties of formed‐ferrite discharge driven by a new electrical circuit scheme with a prepulse initiation has been carried out. With the prepulse electrical initiation, we demonstrated that the jitter time of main discharge onset can be decreased from a few tens of microseconds to ∼0.1 μs allowing us to synchronize a number of formed‐ferrite discharges switched in parallel. Discharge plasma surface radiation characteristics in the spectral region of the XeF2 photodissociation band (140–180 nm) were measured by the dynamic actinometry method. The plasma surface radiation intensity is 2.3×1023 photons/cm2 s in 10 μs which corresponds to a brightness temperature of 22 000 K.