Search found 304 matches

by Roberto Ferrari
Fri Feb 22, 2019 2:57 pm
Forum: Advanced Technical Discussion Area
Topic: A theoretical discussion based on data re. fusor conditioning fusion
Replies: 11
Views: 6571

Re: A theoretical discussion based on data re. fusor conditioning fusion

Dan Thanks for that article. Richard often comments on a progressive increasing of neutron production, after hours/days of fusor running. May be that explained based in the surface fusion suggested in the paper? Hours of bombarding the grid with deuterium rise the deuterium stored on grid metals the...
by Roberto Ferrari
Fri Nov 09, 2018 4:19 pm
Forum: Fusor and/or General Fusion Theory (& FAQs)
Topic: Titanium walls
Replies: 10
Views: 13987

Re: Titanium walls

Right, good option.
Probably all we tend to start thinking from our own set up.
Surely I suggested the sputter version because I have a small 2.75” CF cross.
by Roberto Ferrari
Fri Nov 09, 2018 12:43 pm
Forum: Fusor and/or General Fusion Theory (& FAQs)
Topic: Titanium walls
Replies: 10
Views: 13987

Re: Titanium walls

Hi Frank Of course you are right! The thread is related to the success of Japanese researchers who improved the neutron generation when using a chamber with titanium walls. See comments by Dan Knapp and Richard. Focusing on titanium, I suggested a cheaper way than a full titanium chamber, just depos...
by Roberto Ferrari
Mon Oct 22, 2018 5:13 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: How to test the quality of heavy water (D2O)?
Replies: 7
Views: 4522

Re: How to test the quality of heavy water (D2O)?

Hi Rich

Thanks for the warning. I had forgotten the hygroscopic property of D2O.

There is a US thesis from the 60's about chromatographic separation of H2, HD and D2 with packed column and low temperature.
by Roberto Ferrari
Mon Oct 22, 2018 4:04 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: How to test the quality of heavy water (D2O)?
Replies: 7
Views: 4522

Re: How to test the quality of heavy water (D2O)?

googled: 10% heavier.
For precise density measurements use a picnometer.
by Roberto Ferrari
Mon Oct 22, 2018 1:47 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: How to test the quality of heavy water (D2O)?
Replies: 7
Views: 4522

Re: How to test the quality of heavy water (D2O)?

Harald You answer your question. Different qualities offered have their own spec. Having doubts of your provider, change it or test it. Typically % of heavy water is evaluated by IR spectrometry. See this plot. The-typical-IR-spectra-of-water-with-varying-content-of-deuterium.png May be by density m...
by Roberto Ferrari
Fri Oct 12, 2018 11:50 am
Forum: Fusor and/or General Fusion Theory (& FAQs)
Topic: Titanium walls
Replies: 10
Views: 13987

Re: Titanium walls

Ian, John thank you for your comments.
Yes, will require some additional equipment but someone will be able to do.
by Roberto Ferrari
Tue Oct 09, 2018 4:08 pm
Forum: Fusor and/or General Fusion Theory (& FAQs)
Topic: Titanium walls
Replies: 10
Views: 13987

Titanium walls

Following recent suggestion by Richard to open a discussion about the potential usefulness of titanium as the walls of the fusor chamber, here is some idea. The cost of a full titanium chamber was mentioned as prohibitive. A more economic alternative would be to deposit titanium onto the SS walls. T...
by Roberto Ferrari
Wed Sep 19, 2018 2:45 pm
Forum: Files
Topic: Paper on neutron counting using ZnS(Ag) phosphors
Replies: 8
Views: 22651

Re: Paper on neutron counting using ZnS(Ag) phosphors

Hi Richard

Thanks for the comments.
I will rely most in Ag activation and the russian corona tubes.
Roberto
by Roberto Ferrari
Tue Sep 18, 2018 6:27 pm
Forum: Files
Topic: Paper on neutron counting using ZnS(Ag) phosphors
Replies: 8
Views: 22651

Re: Paper on neutron counting using ZnS(Ag) phosphors

Hi Jon

Understood!
Let's have enough neutrons and then...
Roberto