Search found 1219 matches

by Jon Rosenstiel
Thu Mar 05, 2020 11:59 pm
Forum: Items For Sale
Topic: Deuterium lecture bottles on ebay
Replies: 10
Views: 1691

Re: Deuterium lecture bottles on ebay

Cost, shipping included, for a 50-liter bottle of deuterium gas was $473.68.

JonR

Datasheet:
by Jon Rosenstiel
Sat Feb 22, 2020 2:15 am
Forum: Other Forms of Fusion - Theory, Construction, Discussion, URLs
Topic: Columbus-I Pinch Tube Build
Replies: 54
Views: 26797

Re: Columbus-I Pinch Tube Build

Mark,
Great to see these caps finally getting some use. Nice work.

Jon Rosenstiel
by Jon Rosenstiel
Sat Feb 22, 2020 1:44 am
Forum: Compilations of long term fusor.net technical contributors
Topic: Jon Rosenstiel
Replies: 0
Views: 399

Jon Rosenstiel

I grew up on a farm in northern Illinois during the 1940’s and 1950’s. By the time I was six I already had an intense interest (obsession) with electrical and mechanical things. Fortunately, my parents were supportive of this obsession, the result being a somewhat steady supply of mostly worn out ap...
by Jon Rosenstiel
Fri Jan 17, 2020 6:18 pm
Forum: Images du Jour
Topic: Visit to Jon Rosenstiel's
Replies: 7
Views: 1078

Re: Visit to Jon Rosenstiel's

One day it’s a fusor, the next a pumping station. On the pumps (Leybold D16A backing and Pfeiffer TPH-190 turbo) is my Ortec hpGe detector getting its annual bump and bake. Wrapped up in foil is an aluminum rod in contact with the detector’s cooling rod. Heat tape wrapped around the upper portion of...
by Jon Rosenstiel
Tue Jan 14, 2020 1:39 am
Forum: Images du Jour
Topic: Jim Kovalchick -My attempt at smaller fusor
Replies: 42
Views: 4561

Re: Jim Kovalchick -My attempt at smaller fusor

Jim,

As to outgassing, was your titanium cathode pure Ti or an alloy? (The one I made was an alloy, 6Al-4V)

Jon R
by Jon Rosenstiel
Fri Jan 10, 2020 5:07 am
Forum: Other Forms of Fusion - Theory, Construction, Discussion, URLs
Topic: TA DA New Use of Plasmas
Replies: 10
Views: 1276

Re: TA DA New Use of Plasmas

Only a 30-foot range? Guess I’ll need to buy two or three for the house plus another for my lab!

Jon Rosenstiel
by Jon Rosenstiel
Thu Jan 09, 2020 6:45 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Magnetically assisted ionization
Replies: 14
Views: 1192

Re: Magnetically assisted ionization

From my understanding the main purpose of the magnets was to help stability, I don't recall Joe saying anything (good or bad) about their effect on NPR. (Neutron Production Rate) My main interest is activation so maximum neutron flux at the sample is what I'm after. Stability was not an issue for me...
by Jon Rosenstiel
Tue Jan 07, 2020 4:20 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Cube fusor build
Replies: 32
Views: 5791

Re: Cube fusor build

Frank, great idea that may help us get to the bottom of this conundrum, much appreciated. I’ve worked on this just enough to realize that the detector clamped in a lab stand is not going to cut it, takes too long to reposition the detector and is not very accurate. I’m in the process of upgrading my...
by Jon Rosenstiel
Fri Jan 03, 2020 10:59 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Cube fusor build
Replies: 32
Views: 5791

Re: Cube fusor build

304 SS cathode images. Removed after about two weeks of runtime, the majority of that time at 400 W input power. (40 kV, 10 mA, 2.4E+06 n/s) There are two things I find interesting, the narrow ring around the cathode's internal circumference and the whiskers it grew. My guess is the ring is where t...