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by Richard Hull
Tue Jul 27, 2021 7:20 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Fun with the scope or what happens at the breakdown?
Replies: 3
Views: 100

Re: Fun with the scope or what happens at the breakdown?

Great! that mimes what Frank and I found with the AM radio he suggested in a 2005 HEAS event in my lab. The noise is there with some sort of resonant output among the horrid splatter in the AM band again, due to any number of highly variable conditions a peak at 1.4mhz is for Joe's fusor only in thi...
by Richard Hull
Tue Jul 27, 2021 4:42 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Fun with the scope or what happens at the breakdown?
Replies: 3
Views: 100

Re: Fun with the scope or what happens at the breakdown?

Interesting report. We know or have known that the fusor is a source of RF energy. "Noise tubes" of old were special gas filled tubes. Some had radium deposits in them as well. Placing an AM radio near the operating fusor will show a vast noise band. The capacitance of a fusor is on the order of a f...
by Richard Hull
Sun Jul 25, 2021 6:41 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Eberline E600 manual and calibration software available
Replies: 19
Views: 12178

Re: Eberline E600 manual and calibration software available

I was, indeed, one of the confused. Sorry about that.

Richard Hull
by Richard Hull
Sun Jul 25, 2021 6:21 pm
Forum: Vacuum Technology (& FAQs)
Topic: TMH-260 Turbo
Replies: 31
Views: 14493

Re: TMH-260 Turbo

Hitting the issue the hard way. Good luck with you efforts to spin up your turbo using a self-designed turbo controller. Keep us in the loop on how it turns out, once assembled.

Richard Hull
by Richard Hull
Sat Jul 24, 2021 9:33 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Neutron Silver Activation Demo Cell
Replies: 18
Views: 3343

Re: Neutron Silver Activation Demo Cell

We are told that GM tubes are poor detectors of gamma rays. Gamma rays have vast range of energies as does a shell based x-ray spectrum. Low energy photons can liberate electrons in their encounter with matter. The higher Z metals will exhibit more electrons per unit mass for any given photon energy...
by Richard Hull
Sat Jul 24, 2021 8:17 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: New Rhodium counter system and moderator for fusor V
Replies: 17
Views: 949

Re: New Rhodium counter system and moderator for fusor V

Thanks for clearing your original thrust up for me. The Russian tube is perfect for the Rh104m counting in intimate contact only due to the heavy output of its whimpy x-rays, I assume the claimed x-rays are nuclear in origin and not shell types. Wiki gives the following highly variable statement. "G...
by Richard Hull
Sat Jul 24, 2021 8:08 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Neutron Silver Activation Demo Cell
Replies: 18
Views: 3343

Re: Neutron Silver Activation Demo Cell

I ultimately decided against the 2" pancake as its gamma sensitivity is too high due to the steel backing doing compton scattering, making it far more sensitive to gammas of all energies. Most of my lab gammas are in the 500kev to 1.5mev range. This would increase my background. The intimate contact...
by Richard Hull
Sat Jul 24, 2021 7:28 pm
Forum: Images du Jour
Topic: New Home for Doug's Fusor
Replies: 55
Views: 8550

Re: New Home for Doug's Fusor

Thanks Bob this is real data here and is inline with all that those of us here who have done activation find a perfect fit. This is the real deal! I am glad you grabbed data more or less as I do. It makes for easy graphing that tells a lot to the knowledgeable observer as well as teaching the un-ini...
by Richard Hull
Sat Jul 24, 2021 7:19 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Eberline E600 manual and calibration software available
Replies: 19
Views: 12178

Re: Eberline E600 manual and calibration software available

Sorry, is the smart cable the 9 pin serial? Or is this something I have never seen? 100% of these that I have ever seen have a MHV BNC on them and often a 9 pin computer interface!

Richard Hull
by Richard Hull
Sat Jul 24, 2021 6:44 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Eberline E600 manual and calibration software available
Replies: 19
Views: 12178

Re: Eberline E600 manual and calibration software available

Any difficulty doing a simple google search?? I figured that was just too much...
We really put a premium of self-directed learning here.

https://www.youtube.com/watch?v=ktQVwfo-s9w

Richard Hull

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