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.
Robert Dwyer wrote: ↑Wed Oct 24, 2018 4:33 pm
If you want to (...) detect D+T fusion reactions (...). The same detection methods for D+D will work for D+T, neutron moderators are a wonderful thing for activation detectors.
Please read and understand the posts people write for you - stop quoting! Until you do, I for one, will not further answer your questions. Doing what you are asked is called being a good member.
Of course it is possible to place a detection device inside the fusor or any fusion device. It will be possible once you design, create and test it out.
Many things are within the realm of possibility. I have heard of folks putting PIPs detectors in such environments. I have also heard of a lot of PIPs detectors being destroyed, as well. Got the several hundreds of dollars for the detector and electronics? Give it a whirl and....again, get back to us with your results.
Sounds like you are hopeful of the physics of your idea working out just the way you plan for it to. The real physics of a fast ionized gas environment presents nothing but a path with a lot of snares to the feet of the untested, hopeful theorist and experimenter. In the end, only the hands-on experimenter comes out the other side with knowledge that is costly, hard won and worth listening to.
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
To be frank I was thinking about something much more simple than a passivated implanted planar silicon detector. As my fusor is not a plasma fusor but a beam on target design (without or very little plasma in the fusion chamber), I was thinking about simply using a Geiger-Müller-counter in the first step. I am aware, that a Geiger-counter does count any ionizing radiation, thus it is not a nuclear fusion specific detector. However, if I managed to keep it away from the beam, maybe it could provide me a first indication. Even if the measured Geiger-Signal under beam on target was not zero (so called positive bias of sensor), I could recalibrate this positive bias to zero again. Fortunately, I am a statistician, who can easily handle a lot of (bias and noise) measuring problems.
Please keep in mind, that maybe not all (amateur) fusion enthusiast in this forum may be this fortunate/ prosperous to possess the equipment you have.
A GM tube in the vacuum would measure only x-rays and probably swamp out to a gentle arc condition, which typically ends the tube's life. A GM counter outside of your beam device would also go crazy as X-rays penetrate the device as you approach fusion voltages. Forget any attempt to use a GM tube or GM counter to herald fusion or neutron production.
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