Abstracts posted for 20th US-Japan IECF Workshop

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Dan Knapp
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Abstracts posted for 20th US-Japan IECF Workshop

Post by Dan Knapp » Mon Oct 08, 2018 2:54 pm

The 20th US-Japan Workshop on Fusion Neutron Sources for Nuclear Assay and Alternate Applications (formerly called workshop on IECF) will be held next week at the University of Maryland. The abstracts for the meeting are now posted at:
https://blog.umd.edu/iecf/posterspresentations/
Of particular interest to this group would be one from the Kyoto University Group (Bakr, Ultra-Compact Neutron Generator based on IEC developed for SNM Interrogation System). In this 17 cm diameter fusor, with 6 cm diameter molybdenum grid, they achieved 8x10e8 neutrons per second at 70 kV/70mA. They achieved a fourfold increase in neutron flux going from a stainless steel to titanium sphere, which they attributed to increased adsorption of deuterium on the anode walls. To operate such a small device at 70 kV required a rather elaborate feedthrough (that is larger than the fusor itself). Although this kind of performance is probably beyond the capabilities of the amateur, it nonetheless shows what is possible in a small device.

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Richard Hull
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Re: Abstracts posted for 20th US-Japan IECF Workshop

Post by Richard Hull » Mon Oct 08, 2018 6:17 pm

What I think this Japanese work shows is my positing about shell absorbed deuterium for the last few years is now a positive direction for our kind of simple fusors.

The kind of "flash in the pan folks" we get here never tap into this possibility. Of course, titanium hemispheres are probably out of reach for even the most advanced folks here. The smaller sized devices with increasing pressures might also be a good place to investigate increasing the numbers.

It is important to realize that the very best hopeful design of a simple fusor will forever remain many orders of magnitude removed from usable fusion energy in the quest for same as an energy source. However, I feel it can be developed to a point of a couple of orders of magnitude improvement through such efforts seen in the work going on in Japan. Of course, costs go up in the fusion biz with such efforts. This is true even with the simple fusor.

To carry on this thread's direction it might be best to start a new one in the advanced discussion forum or the Theory forum.

Richard Hull
Progress may have been a good thing once, but it just went on too long. - Yogi Berra
Fusion is the energy of the future....and it always will be
Retired now...Doing only what I want and not what I should...every day is a saturday.

Scott Moroch
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Re: Abstracts posted for 20th US-Japan IECF Workshop

Post by Scott Moroch » Tue Oct 09, 2018 4:21 am

Thanks for the information, Dan. I had absolutely no idea this was happening at my university. I will have to see if it is possible for me to sit in on some of the talks as the conference is a 5 minute walk from where I live. Very interesting abstracts.

Scott
"In the middle of difficulty lies opportunity"
-Albert Einstein

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