Search found 1438 matches

by Dennis P Brown
Sun May 27, 2018 5:04 pm
Forum: Vacuum Technology (& FAQs)
Topic: High Vacuum Engineering Design, Analysis, and Build of a Small-Scale Multipurpose System
Replies: 48
Views: 3129

Re: High Vacuum Engineering Design, Analysis, and Build of a Small-Scale Multipurpose System

If your high energy charge particle device is so powerful, then you had better be aware of the x-ray hazard and be certain of your shielding.
by Dennis P Brown
Sun May 27, 2018 4:57 pm
Forum: Fusor and/or General Fusion Theory (& FAQs)
Topic: A theory of a possible method of fusion
Replies: 21
Views: 3453

Re: A theory of a possible method of fusion

You say "2 stripped down magnetrons " One does NOT use magnetrons for plasma excitation due to the danger. Any attempt is most likely to be fatal. Electrically sealing any such chamber properly is not something anyone is likely to succeed at and failure means exposure to a deadly level of microwave ...
by Dennis P Brown
Sun May 27, 2018 1:33 pm
Forum: Fusor and/or General Fusion Theory (& FAQs)
Topic: A theory of a possible method of fusion
Replies: 21
Views: 3453

Re: A theory of a possible method of fusion

Remember, there are inexpensive methods to obtain vacuum pumps; besides getting high end pumps dirt cheap on ebay from time to time (I got two high end, two stage vacuum pumps in perfect working order for $10 each; they pull under two microns and handle huge loads. Shipping cost much more.) One can ...
by Dennis P Brown
Fri May 25, 2018 12:35 pm
Forum: Announcements and Site Administration Topics
Topic: A bit more on hamfesting (buying and selling)
Replies: 5
Views: 307

Re: A bit more on hamfesting (buying and selling)

Richard, at these places are the items generally sold as is? I have no real experience so I was wondering? Considering the nature and short time available for these markets, I'd think that might be a given but I don't know. So maybe this aspect should be talked about as well?
by Dennis P Brown
Fri May 25, 2018 12:06 pm
Forum: Images du Jour
Topic: Neutron Club Application - Erik Smith
Replies: 5
Views: 454

Re: Neutron Club Application - Erik Smith

Congratulations on being accepted; while your count is extremely low for the pressure and current, that may be due to your neutron detector (I do have questions on that)and/or your electrode design. Maybe that rather limited electrode is causing the lower flux readings - your pressure should, I'd th...
by Dennis P Brown
Fri May 25, 2018 11:45 am
Forum: New User Chat Area
Topic: Optimal Deuterium Gas Pressure?
Replies: 4
Views: 212

Re: Optimal Deuterium Gas Pressure?

Deuterium gas pressure determines current when a given voltage is set (for a given system and assuming a sufficiently low pressure is reached); so, if one sets a voltage and as the pressure falls, the plasma will suddenly start conducting, which ignites the plasma (the current will surge, then lower...
by Dennis P Brown
Thu May 24, 2018 1:08 pm
Forum: Advanced Technical Discussion Area
Topic: Update on Reactor Plasma Imaging Project
Replies: 2
Views: 233

Re: Update on Reactor Plasma Imaging Project

Outstanding accomplishment - congratulations!
by Dennis P Brown
Thu May 24, 2018 1:06 pm
Forum: Please Introduce Yourself
Topic: Good Afternoon from Central California
Replies: 3
Views: 537

Re: Good Afternoon from Central California

Building a demo fusor is not very difficult (compared to a real fusor) and can be fairly safe if one uses a minimum of caution and reads the FAQ's, and asks questions here when in doubt. A NST (see FAQ's for that) are fairly safe (but one can kill one's self if you are extremely foolish) and creatin...
by Dennis P Brown
Thu May 24, 2018 12:25 pm
Forum: Images du Jour
Topic: First Plasma
Replies: 10
Views: 423

Re: First Plasma

Any gauge that contaminates your system tells you nothing except how to waste your time and efforts. Throw that junk away. Also, those connections on the chamber (besides the acrylic window) are not suitable for any real vacuum system. Creating a vacuum has enough issues for a novice without using a...
by Dennis P Brown
Sun May 20, 2018 7:36 pm
Forum: Fusion --- Past, Present, and Future
Topic: Regional Science Fair Success - but still a long way to go
Replies: 3
Views: 1525

Re: Regional Science Fair Success - but still a long way to go

Congratulations on your success. As you are starting to understand, one needs to be careful discussing issues about natural phenomenon's like solar flares. These are and have been extensively studied by astro-physicist and theoreticians for many decades. Your first duty is to read experts on the fie...