Hard X-ray diagnostic of Z-pinch discharges

An experimental technique for the detection and time-resolved characterisat ion of hard X-radiation from a Z-pinch is described. The detectors employed consist of combinations of plastic scintillators and photomultipliers tube s coupled through optical fiber. The scintillators were fitted with thick a luminium and lead filters and cross filtering is then used to obtain the en ergy of the Xrays. It was found that the X-rays can reach energies of up to 4 MeV, much higher than the applied voltage. The observed radiation intens ity varied with the disruption time lag.