Focus Fusion Films presents “dense plasma focus”, incorporating animation by Torulf Greek. Edited with Sony Moviemaker. More films to follow. Your contribution is essential to this process.
Two nested electrodes
The video refers to “two electrodes” yet the images show lots of rods. What’s going on? The inner electrode is the hollow cylinder in the center. The outer electrode is comprised of all of the rods on the outside. Collectively, all these rods are considered the one outer electrode. For comparison, some Dense Plasma Focus machines have a solid cylinder as the outer electrode. More about electrode design.
The vacuum chamber is shown open - i.e., in the photo, the base is not attached so that you can see the electrodes. Of course, it won’t be able to hold a vacuum without the base attached. Visit this page for more insight into the core electrodes.
The switches also have electrodes
Note that in addition to the core electrodes, each of the switches on the capacitor bank has electrodes. We call them “switch electrodes” to distinguish them from the “core electrodes” above. The switch problem that you read about elsewhere on the site is part of the driver system that is designed to deliver the charge to the core electrodes.
Check out this visual overview of FoFu-1’s driver system, taken over the course of its construction. You can watch it being built!
As to the animation above, note also the red and blue beams representing positive and negative ions have been marked the opposite of convention.
Another animation of the DPF