Neutron detector - interesting

This area is for discussions involving any fusion related radiation metrology issues. Neutrons are the key signature of fusion, but other radiations are of interest to the amateur fusioneer as well.
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Richard Hull
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Neutron detector - interesting

Post by Richard Hull »

I rarely poke around the internet...not much worth seeing....However, this does look interesting. This not a recommendation, but for a bit more than a BTI bubble detector, you might latch on to a neturon detector using the Russian tube that is somewhat qualified and in a moderator! You will have to interface it to a computer or your own electronics. It appears to be a well done item with caveats noted.


http://www.gammaspectacular.com/gamma-s ... eutron-150


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
The more complex the idea put forward by the poor amateur, the more likely it will never see embodiment
Tom McCarthy
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Re: Neutron detector - interesting

Post by Tom McCarthy »

Made by our very own Steven Sesselmann!
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Richard Hull
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Re: Neutron detector - interesting

Post by Richard Hull »

I knew that Steve was doing this and with his careful work in trying to warrant the tube's usefulness through selective testing of the finished product it did not seem like the "pig in a poke" found in buying a naked, untested Russian tube off e-bay. As Steve, myself and Carl Willis have noted, these tubes require an extra effort and electronics awareness that the BF3 or 3He tubes don't have issues with. (more noise, more bias issues, etc.) Steve's qualified and tested tubes in moderator seem a good investment for those who can't latch onto a 3He tube. Plus, backed by one of our own, he might shepherd weaker individuals into creating a useful neutron counter that works using this detector head. Add to this his careful and thoughtful caveats related to these tubes, one is not led down a primrose path.

A truly useful, sensitive neutron counter is a must have item for the beginning fusioneer. There are many costly hurdles on the way to true fusion and entry into the neutron club. The neutron counter is one of those hurdles. It is not for the weak in electronics, but for those strong in the pocket book. This is due to the fact that most would-be claimants of fusion tend to do a really poor to lousy first pass at fusion with poor and often unbelievable data collection and marginal to minimum detectable fusion. A strong, workable and believable neutron counter can make or break that first pass effort.

There are four weak areas in neutron detection seen in amateur efforts.

1. Poor choice of detector
2. Terrible electronic interfacing
3. Gamma/x-ray rejection failures
4. Even if one purchased a ready made neutron counter with probe and moderator, calibration and technique can still thwart the use of an otherwise suitable neutron counting system.

This area is of such supreme importance. we created a special forum to deal with it. It proved a snare to the feet of electrochemists working in cold fusion back in the 90's. Like many here, they thought that a neutron counter was just like a GM counter....Turn it on, push the button and count like hell. To their chagrin, it doesn't work that way. It is easy to do stupid and sloppy neutron metrology.

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
The more complex the idea put forward by the poor amateur, the more likely it will never see embodiment
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