Search found 111 matches

by Joe Gayo
Wed Apr 24, 2019 6:33 am
Forum: Images du Jour
Topic: More Upgrades
Replies: 14
Views: 8468

Re: More Upgrades

I know... I was referring to Richard talking about the D-D fusion cross section versus energy
by Joe Gayo
Tue Apr 23, 2019 7:31 pm
Forum: Images du Jour
Topic: More Upgrades
Replies: 14
Views: 8468

Re: More Upgrades

That assumes that the ions gain the full cathode potential, but in our neutral collision dominated systems I don’t think that’s true. Of course the xrays are a problem. I do have a setup that’s controlled from 50ft away.
by Joe Gayo
Tue Apr 23, 2019 1:18 am
Forum: Vacuum Technology (& FAQs)
Topic: Edward Barocel pinout?
Replies: 3
Views: 6557

Re: Edward Barocel pinout?

Does anyone have this information?
by Joe Gayo
Mon Apr 22, 2019 10:37 pm
Forum: Images du Jour
Topic: More Upgrades
Replies: 14
Views: 8468

Re: More Upgrades

I added a water cooling loop to the chamber to allow longer run times. (The thickness of the cathode already allows for long run times.) The main limiter seems to be electron beam heating of the walls which vaporizes material and poisons the fusion rate. The current setup can run for hours at 5mA an...
by Joe Gayo
Thu Apr 11, 2019 7:48 pm
Forum: Images du Jour
Topic: More Upgrades
Replies: 14
Views: 8468

More Upgrades

It has been a while since my last post, but I've continued working on the device. There have been several significant upgrades: - Feedthrough and ballast resistor changed to accommodate 60kV (with the assistance of mineral oil). IMG_1233_sm.jpg IMG_1234_sm.jpg - New 1kW 60kV power supply - Pressure ...
by Joe Gayo
Mon Mar 18, 2019 4:09 am
Forum: Announcements and Site Administration Topics
Topic: Commentary on Doing Fusion
Replies: 17
Views: 8428

Re: Commentary on Doing Fusion

My suggestion is to raise the minimum n/sec (and require bubble dosimeter or electronic detection with traceable calibration) for neutron club entry.
by Joe Gayo
Mon Mar 04, 2019 3:22 am
Forum: Announcements and Site Administration Topics
Topic: Dumping the trash
Replies: 9
Views: 6281

Re: Dumping the trash

The spambot question is fine ... It seems like a minimum bar for those attempting to work with high voltage, vacuum, etc.
by Joe Gayo
Wed Feb 27, 2019 6:29 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Collection of information about russian SNM tubes
Replies: 13
Views: 9876

Re: Collection of information about russian SNM tubes

The SNR improved dramatically, so gammas can be discriminated
by Joe Gayo
Wed Feb 27, 2019 4:43 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Collection of information about russian SNM tubes
Replies: 13
Views: 9876

Re: Collection of information about russian SNM tubes

Can you try running the CHM-11 just below the corona starting voltage (ie 670V)?
by Joe Gayo
Sun Feb 17, 2019 8:18 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: SNM-11/СНМ-11 Tube - Again ...
Replies: 12
Views: 7262

SNM-11/СНМ-11 Tube - Again ...

The Russian tubes have been discussed numerous times, but I recently made some observations that are worth sharing. I've been frustrated by the signal to noise ratio of the SNM-11 tube at the recommended bias voltage of 1600V. The bias resistor is 50Meg and the signal is ac coupled and terminated as...