The Focus Fusion Society Forums Focus Fusion Cafe New here – My FF questions Reply To: Contour Crafting – Radical change in housing

#6037
jamesr
Participant

theanphibian wrote:
Am I correct in taking that the purple image is from imaging from a real experimental test?

I believe the image is taken from Bostick, Nardi et al 1976 paper:
RADIATION DAMAGE (BLISTERING) IN Al, Cu, Si BY EXPOSURE TO A PLASMA FOCUS DISCHARGE doi:10.1016/0022-3115(76)90350-0

The caption to the image in the paper is:

(c) Image converter photograph of current sheath (5 ns exposure by visible light) 20-30 ns before maximum axial compression,
as sheath collapses toward the “pinch” stage. The plasma vortex filaments which are visible on the current sheath provide the “raw material” out of which the plasma
nodule will be probably formed. Maximum voltage applied to the electrodes: 15 kV: local current within the nodule can be much larger than peak current on electrodes
because of current loops formation in the plasma. Plasma nodules are strong sources of bremsstralung X-rays and can be observed by pinhole camera photographs.
In one discharge the emission intensity from one nodule is usually higher than intensity of other nodules when a multiple-nodule structure is formed in the
plasma within the axial column as it is outlined in (a).