Andrea Da Re1, Franco Mezzetti1, Agostino Tartari1, Giovanni Verri1, Luigi Rapezzi2, Vladimir A. Gribkov3
1Dipartimento di Fisica dell’Universita di Ferrara and Instituto Nazionale di Fisica della Materia (INFM), 12 Via del Paradiso, 44100 Ferrara, Italy,
2Ente per le Nuove Tecnologie, l’Energia e l’Ambiente (ENEA), C.R. Brasimone, 40032 Camugnano, Bologna, Italy,
3Institute of Plasma Physics and Laser Microfusion, 23 Hery Str., 00-908 Warsaw, Poland
Plasma derived flash X-ray sources may find potential applications in medicine and industry. Notwithstanding, as is the case of Plasma Focus (PF) devices, their characterisation in term of photon energy, temporal and spatial beam stability is far to be considered satisfactory. In this work, a radiographhic approach, which avoids the effects caused by the intrinsic instability of the pinch output of a PF machine, is proposed and an attenuation curve can be attained even in presence of X-ray emission instability. Using two radiographic films for each shot exposition symmetrically positioned and collimated to the pinch region the mean energy of the photons in the X-ray beam are evaluated. The X-ray emission symmetry fro0m the pinch region was then utilised to control the validity of the proposed methodology.