Detail of N2 TEA Laser Electrode Rails and Capacitor. This configuration - left rail a piece of 1 and 1/2 inch aluminum, and right rail, two nested 1-inch (thinner) aluminum rails, weighted by a cylindrical steel rod, inside of a plastic pipe. Right side of capacitor is slightly smaller than left side. Inductor of twisted copper wire, connected to capacitor plates in centre, held to plates by weights of two steel bolts, worked best, as a 1 meg resistor grew too hot, and did not work as well. Note that the right rail, which is two nested L-pieces, has the top L-piece shifted towards the left rail, about 2 or 3 mm, so that the top piece projects out above the capacitor plate, and interacts with the 90-degree edge that the inverted angle-piece of the left side projects. This rail geometry was the *only* setup that would yield good laser action, and only after very careful adjustment of the inter-rail gap is made. The two electrical insulators and the glass artifact at the bottom left of the image are there to weight the capacitor plates and dielectric, and thus reduce the capacitor induction, which is important in this design. Several other rail geometries were tried, and most would just not lase, but this configuration lases surprisingly well, once adjusted. Adjustments are made by gently tapping on the right side rail only, so that an inter-electrode gap of roughly 1.3 at the rear, and 1.4 to 1.7 mm at the front is achieved. (The distances are estimates only). Another point of note is that the power-supply was modified to reverse it's original polarity, so the bottom plate of the capacitor (the "ground" plate is positive, and the top two plates are negative. This was because the Molectron power supply was used to power an IEC fusion device, which requires high-voltage negative on the ion-containment electrode. This particular rail configuration lases surprisingly well, and projects a bright violet-blue beam-spot on white paper. (The ultra-violet laser beam, at 337.1 nanometers wavelength, is of course, completely invisible to human eyes, and only reveils itself when it interacts with a target. If one coats a piece of paper with yellow highlighter (from the yellow markers used to highlight documents), you can observe an extremely bright beamspot, as the UV light reacts to produce a very bright glow.