Search found 34 matches

by Justin Fozzard
Fri Feb 26, 2021 12:12 pm
Forum: Items wanted
Topic: Seeking ballast resistor
Replies: 6
Views: 503

Re: Seeking ballast resistor

I've bought a few of these 100K 100W wirewound resistors for my oil-filled 65kV 60mA supply (~£10 each if you buy 4):

https://www.ebay.co.uk/itm/100W-100K-Oh ... 3535509957?

100k 100W Wirewound.jpg
by Justin Fozzard
Fri Feb 26, 2021 11:36 am
Forum: Advanced Technical Discussion Area
Topic: A guide to DIY pulse forming networks
Replies: 2
Views: 733

Re: A guide to DIY pulse forming networks

Thanks for the link to your simulations, Robert, it's an excellent and very useful resource. Here is a link to the standard textbook on the subject from the Radiation Laboratory Series, "Pulse Generators" by Glasoe and Lebacqz, and also few useful papers: http://www.nj7p.org/Manuals/PDFs/Books/MIT-R...
by Justin Fozzard
Wed Feb 03, 2021 6:25 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Soldering Ceramics
Replies: 5
Views: 1115

Re: Soldering Ceramics

Richard's suggestion of using Indium to wet the ceramic surface is a very good one, though I haven't tried it yet. Strong in his excellent "Procedures in Experimental Physics" mentions a few methods, one involving platinum that may be a bit expensive, another being to use a silvering solution to dep...
by Justin Fozzard
Mon Jan 25, 2021 12:51 pm
Forum: Fusor and/or General Fusion Theory (& FAQs)
Topic: Quantum world views - It's what make fusion happen
Replies: 19
Views: 7228

Re: Quantum world views - It's what make fusion happen

I find it very interesting and surprising that it is possible to trap neutrons and in a variety of ways. Here is a rather good presentation about neutron trapping and a couple of papers on the subject: Huffman 2012 Overview of Neutron Lifetime Magnetic Trapping Experiments-compressed.pdf Pattie 2018...
by Justin Fozzard
Wed Jan 06, 2021 11:57 am
Forum: Advanced Technical Discussion Area
Topic: RGA to Analyze Ion Beam Composition
Replies: 8
Views: 2158

Re: RGA to Analyze Ion Beam Composition

This might not be very much help solving your problem, Joe, but your post reminded me about this paper, a very simple design for a TOF Mass spectrometer:
by Justin Fozzard
Tue Jan 05, 2021 7:21 pm
Forum: Other Forms of Fusion - Theory, Construction, Discussion, URLs
Topic: New Method of Magnetic Confinement that has Received Some Interest from DARPA
Replies: 12
Views: 2701

Re: New Method of Magnetic Confinement that has Received Some Interest from DARPA

I tried posting the pdf papers that I cited into the files section, but they are too big; mostly over 10MB.
I would be happy to put them on a communal google drive or similar if someone can set it up.
by Justin Fozzard
Tue Jan 05, 2021 11:16 am
Forum: Other Forms of Fusion - Theory, Construction, Discussion, URLs
Topic: New Method of Magnetic Confinement that has Received Some Interest from DARPA
Replies: 12
Views: 2701

Re: New Method of Magnetic Confinement that has Received Some Interest from DARPA

High-order multipoles or "surmacs" (SURface Magnetic Confinement), were extensively investigated in the 1960s and 70s. One device had a spherical arrangement of electromagnets very similar to yours; the Kaktus-Surmac: Sadowski 1981 High-order spherical magnetic multipoles for surface confinement of ...
by Justin Fozzard
Sun Jan 03, 2021 12:35 pm
Forum: Advanced Technical Discussion Area
Topic: 3D Electric Potential
Replies: 3
Views: 530

Re: 3D Electric Potential

Thanks for sharing your simulations Nicolas, they are very interesting and I admire your continuing efforts. I have attached a pdf copy of notes from an introductory plasma physics course that used Mathcad for various simulations and I hope it will be of some use to you. It contains some hints for c...
by Justin Fozzard
Wed Nov 11, 2020 8:58 am
Forum: Files
Topic: Hydrogen in Metals
Replies: 1
Views: 1114

Hydrogen in Metals

Here is the 2014 paper by Kirchheim "Hydrogen in Metals" for the FAQ - How to boost fusion in operation - Wall loading and cooling.
Kirchheim 2014 Hydrogen in Metals_compressed.pdf
(1.72 MiB) Downloaded 76 times
by Justin Fozzard
Wed Nov 04, 2020 4:27 pm
Forum: Other Forms of Fusion - Theory, Construction, Discussion, URLs
Topic: Electroacoustic resonance and fusion
Replies: 6
Views: 3051

Re: Electroacoustic resonance and fusion

Aaron, firstly I have to agree with John, Dennis and Patrick that you must follow a few simple rules; use your proper name and also read the comprehensive FAQ's. This is a serious group where you will find many knowledgeable members willing to help and advise if you abide by those rules. Secondly, I...