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More Fusion

Posted: Sat May 28, 2016 6:40 pm
by Kuba Anglin
Hello all,

I mentioned previously that Noah and I had run out of deuterium. This is not the case. We thought that our lecture bottle's valve was open when it was actually closed. We simply used all of the deuterium stored in the regulator. This was a pleasant surprise. Anyway, we decided to fuse more atoms.

Data:

Voltage: 25-30 kV
Current: 9-10 mA
Deuterium pressure: 5-15 mTorr
Bubble dosimeter sensitivity: 29 bubbles/mrem
Bubble dosimeter distance from ideal neutron source: 15 cm
Bubbles generated: 24
Combined duration of testing: 20 minutes

Calculations:

Neutron radiation dose: 24 bubbles/29 bubbles/mrem = 0.83 mrem
Neutron energy: Mono-energetic 2.45 MeV (flux to dose rate = about 8 (neutrons/cm^2/second) / (mrem/hour))
Neutron flux at detector: (0.83 mrem) (1/3 hours^-1) (8 (neutrons/cm^2/second) / (mrem/hour)) = 20 neutrons/cm^2/second
Total neutron flux: (20 neutrons/cm^2/second) (4*pi*(15 cm)^2) = 58,000 neutrons/ second

We were able to capture the most star-like image yet!

Image

Here is our bubble detector:

Image

The machine:

Image

-Kuba

Re: More Fusion

Posted: Tue May 31, 2016 8:12 am
by Richard Hull
That's the way it is done! Good work! It will get better quickly with running experience. I am using the same bottle of D2 for the past 8 years.

Richard HUll

Re: More Fusion

Posted: Wed Jun 01, 2016 5:59 am
by Roger Harrison
It's great when you have repeatability in a fusor! Then you are doing real science. One suggestion I would make regarding the design would be to locate the gate valve on the opposite side from the high voltage electrode for safety reasons. This way you don't accidentally touch it as you operate the valve!

Re: More Fusion

Posted: Tue Sep 13, 2016 7:54 am
by John Futter
Zoloa or whatever
You have not read the rules
Your first post should have been in the introduce yourself forum
secondly
Zoloa is not your real name
make both fields in the log on the same

We do this to stop troll like behaviour

Re: More Fusion

Posted: Tue Sep 13, 2016 10:56 am
by Dennis P Brown
Very impressive! Thanks for both the pics and data!