Search found 539 matches

by Brian McDermott
Tue Jun 11, 2013 3:36 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Boron-10 Tube
Replies: 7
Views: 3028

Re: Boron-10 Tube

Tom, I am the seller of the B10 tube in question. There are some archived posts here from circa 2005 that show how I and others set up and run the tube with various electronics. In short, all you need is a system where you set the lower level discriminator to a few mV and be able to adjust the bias ...
by Brian McDermott
Wed Nov 28, 2012 4:31 pm
Forum: Fusion --- Past, Present, and Future
Topic: Taylor Wilson in Forbes
Replies: 21
Views: 9254

Taylor Wilson in Forbes

<r>Not a huge or groundbreaking article, but worth a mention: <br/> <br/> <URL url="http://www.forbes.com/sites/eamonnfingleton/2012/11/26/is-this-the-bill-gates-of-energy-meet-nuclear-entrepreneur-taylor-wilson-18/?ss=business%3Aenergy"><LINK_TEXT text="http://www.forbes.com/sites/eamonnfingl ... s...
by Brian McDermott
Mon May 21, 2012 3:19 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Inner Grid Sparking?
Replies: 4
Views: 1908

Re: Inner Grid Sparking?

<t>When you get the sparks, do you still have plasma in the inner grid or is the sparking the main mode of discharge with little to no poissor visible and a low current draw? If the former is the case, it's due to impurities and micro-sharps on the surface of the grid wires that are "burning off," a...
by Brian McDermott
Wed Apr 18, 2012 10:15 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Neutron Generating Chips
Replies: 3
Views: 1896

Re: Neutron Generating Chips

My guess would have been be a pyroelectric crystal accelerator like the one Amptek makes for x-ray generation, but the size scales seem a little too small.
by Brian McDermott
Thu Oct 20, 2011 11:28 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: The nitty gritty, the mathematics of it all
Replies: 16
Views: 3938

Re: The nitty gritty, the mathematics of it all

You beat me to it. Rider's thesis has all the math anyone could ever want regarding IEC systems, and all the justification anyone could ever (not) want for why they will never generate net power.
by Brian McDermott
Wed Mar 02, 2011 5:07 am
Forum: Vacuum Technology (& FAQs)
Topic: rubber/vinyl gaskets - ?
Replies: 4
Views: 1804

Re: rubber/vinyl gaskets - ?

<t>Can the plasma "see" the gasket? If so, it may be causing it to outgas and ruin your vacuum. If it's something like a KF/QF or ISO flange, which use metal centering rings that tend to shield the rubber, this generally isn't an issue, but if you're using a rubber gasket on CF, ASA or custom-made f...
by Brian McDermott
Fri Jan 28, 2011 6:45 pm
Forum: Other Forms of Fusion - Theory, Construction, Discussion, URLs
Topic: Battery-powered Particle Accelerator
Replies: 6
Views: 3584

Re: Battery-powered Particle Accelerator

<r>The thing about pyroelectric neutron sources is that they can be made extremely light, compact and cheap compared to HV accelerator-based neutron sources due to their simplistic design. If you don't need a high output and you need to make a measurement quickly in the field, it is a very attractiv...
by Brian McDermott
Tue Oct 12, 2010 12:46 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Aneutronic fusion questions...
Replies: 26
Views: 6058

Re: Aneutronic fusion questions...

<t>I worked on pyroelectric fusion for a few years as an undergraduate research project. It's great for small, portable x-ray/neutron sources and as a general purpose ion source. Anything power production-related with pyroelectric crystals is so unrealistic that it's not even dream-worthy. <br/> <br...
by Brian McDermott
Sun Oct 03, 2010 1:13 am
Forum: Other Forms of Fusion - Theory, Construction, Discussion, URLs
Topic: Cold fusion is real
Replies: 9
Views: 4544

Re: Cold fusion is real

Dardik's results with the "superwave" waveform input are intriguing, but I want to see a few more labs replicate his experiments before I'm fully convinced.
by Brian McDermott
Wed Aug 25, 2010 5:30 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Fusor Chamber Construction
Replies: 8
Views: 3075

Re: Fusor Chamber Construction

You don't weld the hemispheres together, you weld them to flanges first, then bolt them together.