Matrix detector to determine the spatial distribution of VUV-radiation from plasma diode

The study of the vacuum ultraviolet (VUV) distribution has been carried out with help of the multiple-ionized tin plasma of the high-current pulse diode. The VUV spatial distribution has been determined with the help of a matrix detector. The matrix with 21 copper photocathodes registered VUV pulses with a time resolution of 4 ns. The VUV radiation has been observed as a series of pulses in the first three half-periods of the discharge current oscillations. Based on VUV spatial distribution, the detailed radiating plasma dynamic has been obtained. Analysis of the plasma dynamics has revealed the features of the generating zones for long (1 μs) and short peak (100–200 ns) radiation pulses and the additional radiating zones in the second and third half-periods.