Amateur Nuclear Fusion

Since 2005, I have been very interested in nuclear fusion. I found my way into the community of brilliant amateur “fusioneers” via Richard Hull and the www.fusor.net site. Richard Hull was a profound influence on my research (and still is) and I enjoyed attending his HEAS gatherings in Richmond, VA for many years. Richard has personally inspired generations of scientists on how to practically perform fusion.

Richard Hull and Eric Stroud, HEAS 2006
Eric Stroud and the late great Doug Coulter, HEAS 2009

I started my fusion reaction with a huge shortcut: I was fortunate to purchase Joe Zambelli’s first fusor system of of Ebay, and Joe set me up with all of the necessary parts and equipment for me to do my first runs. My first neutron detection work was done with an old “Snoopy” BF3 neutron detector.

The original Joe Zambelli fusor and the Snoopy detector moderator (left)
Eric Stroud’s first D-D neutron star, circa 2006
Eric Stroud’s first neutron lab. Liquid scintillator is the drum at left, MCA is above.
The KR2 fusor (2nd built). Xray power supply is at left on floor. Eric Stroud is in the lead apron at left!

The next step on the research journey was to actually build my own reactor.  This reactor was a large 12″ chamber, and I tracked down all of the fittings, built the xray power supply, gas delivery, etc over many months. I installed a pure palladium wire grid. It was “quite a contraption” as Carl Willis put it. See descriptions here. My neutron confirmation was done with BTI Bubble Detectors. Since these detectors fail over time, I invested in a long He3 detector, built my own HDPE moderator, and use a Ludlum scalar, giving much better metrology.

Beautiful star-mode D2 poissor in the KR2
Eric Stroud’s He3 detector in a huge chunk of UHMW PE (center) on Richard Hull’s bench during a run, HEAS 2009

I made the first amateur attempt (as far as we know) at the Deuterium-Helium3 reaction. I was able to get neutrons, but could not confirm the proton. Read more about that experiment here.

The D2-He3 poissor, at a mixture of about 1:1 by mass at 35kv. Possibly the first amateur D2-He3 reacton done!
Pictures of the grids (hot and loaded with Xrays) during the D2-He3 experiments

I am honored to be #15 on Richard Hull’s Fusioneer list, in the neutron club! Sometimes my old system shows up in the press as well.

Both of my fusors, He3 counter, NIM crates, MCA live on and are still assembled. I think its time now, in 2023, to take a fresh look at some new ideas. Pyroelectricity anyone? 🙂