Search found 83 matches

by ningauble
Mon Mar 08, 2004 10:03 pm
Forum: Fusion --- Past, Present, and Future
Topic: anyone tried activation of thorium?
Replies: 21
Views: 8035

Re: anyone tried activation of thorium?

Ah! I didn't allow for the moderator thickness which would move
the target even further away from a fusor shell. That might be
where your tiny fusor shell would shine, so to speak Richard.

Mark Harriss
by ningauble
Mon Mar 08, 2004 12:27 pm
Forum: Fusion --- Past, Present, and Future
Topic: anyone tried activation of thorium?
Replies: 21
Views: 8035

Re: anyone tried activation of thorium?

<t>Thats a nice calculator app although I can't get a result even <br/> close to yours, I must be doing something wrong. A distance of <br/> 0.075 metres would be feasible for a 0.150 metre diameter fusor <br/> (6" diameter) would it not? and anything over two hours runtime <br/> would be pushing it...
by ningauble
Mon Mar 08, 2004 12:07 pm
Forum: Fusion --- Past, Present, and Future
Topic: anyone tried activation of thorium?
Replies: 21
Views: 8035

Re: anyone tried activation of thorium?

I'm sorry if my message wasn't too clear but I meant testing for
U233 not Th233, I think it would hang around for a bit longer.

Mark Harriss
by ningauble
Sun Mar 07, 2004 11:49 pm
Forum: Fusion --- Past, Present, and Future
Topic: anyone tried activation of thorium?
Replies: 21
Views: 8035

anyone tried activation of thorium?

<t>In an article in "American Scientist" Sept-Oct 2003 there's an <br/> article about cooking "fertile" Th232 into reactor usable U233 <br/> as a means of making reactor fuel whose spent byproducts are <br/> harder to use for nefarious purposes. Has anyone tried <br/> activation of Th232?, if anyone...
by ningauble
Tue Mar 02, 2004 1:02 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Home Made Scintillator
Replies: 23
Views: 8122

Re: Home Made Scintillator How to Make

<t>The taper is necessary, my 5" mould does not have it and <br/> requires grease pumped in from below to hydraulic the moulding <br/> out of the mould. I'll have to try some slow setting resin <br/> sometime though, I made mine fast and hot and had a cracked <br/> base which i sanded off once it wa...
by ningauble
Tue Mar 02, 2004 12:57 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: All-In-One Board Progress
Replies: 10
Views: 3324

Re: All-In-One Board Progress

I've only skimmed it but it's very thorough, more so than a lot of
kits I've constructed. A first class effort.

Mark Harriss
by ningauble
Thu Feb 19, 2004 9:25 am
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: scintillator polishing
Replies: 3
Views: 1946

Re: scintillator polishing

<t>Commercial plastic lens polishes are more abrasive than glass <br/> polishes such as cerium oxide, they usually are a fine aluminium <br/> oxide. Plastics can tolerate quite high polishing speeds if the <br/> polish liquid has a high flow rate and chilled to about 5 deg C. <br/> <br/> The tough p...
by ningauble
Wed Feb 18, 2004 9:32 am
Forum: Vacuum Technology (& FAQs)
Topic: Any opinions on these suppliers?
Replies: 5
Views: 1979

Re: Any opinions on these suppliers?

A lifetime supply of "Mystery oil". I'll go for the known product I
think.
by ningauble
Wed Feb 18, 2004 1:38 am
Forum: Vacuum Technology (& FAQs)
Topic: Any opinions on these suppliers?
Replies: 5
Views: 1979

Re: Any opinions on these suppliers?

Hi Richard, I am after some 704 for my diff pump and the
quantities looked good for the price, but I have images of these
guys in a shed somewhere with some surplus oil in drums
bought off Ebay. I could be wrong though.

Mark Harriss
by ningauble
Tue Feb 17, 2004 2:06 pm
Forum: Fusion --- Past, Present, and Future
Topic: Hydrogen is a greenhouse gas it seems
Replies: 50
Views: 13919

Re: hydrogen could be made from windmills and energy towers

Power tower? those 60 MW, 1000 metre tall solar thermal
plants?.

Mark Harriss