Search found 297 matches

by Roberto Ferrari
Fri Apr 03, 2020 2:33 pm
Forum: Books & References
Topic: Experimental techniques
Replies: 0
Views: 1229

Experimental techniques

I wish to call your attention to a nice bibliography on experimental techniques, not all but many ones useful for fusor experimenters:

Experimental Innovations in Surface Science, by John T. Yates Jr.

The title is slightly misleading but the content is invaluable.
by Roberto Ferrari
Sat Mar 28, 2020 1:23 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Fusor V construction - the process long running
Replies: 48
Views: 13697

Re: Fusor V construction - the process long running

Richard
I am a bit confused about the image of your HV feedthrough.
The CF flange (a Varian one) seems to lack the sharp edge to seal against the copper washer.
Please comment.
Roberto
by Roberto Ferrari
Mon Mar 23, 2020 12:50 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Window dressing - Trying to clean view port glass
Replies: 5
Views: 803

Re: Window dressing - Trying to clean view port glass

Hi Richard, a useful technique to removing tungsten deposits is melting a bit of sodium nitrite over the surface to be cleaned. It melts at low temperature and reacts with the tungsten. Then you wash thoroughly the window with distilled water.
by Roberto Ferrari
Thu Feb 06, 2020 4:08 pm
Forum: Items wanted
Topic: Hydrogen Gas Detector
Replies: 4
Views: 800

Re: Hydrogen Gas Detector

Joshua

Your concern is adecuate.
But keep in mind H2 is very diffusive, so a vented room will assure a non-explosive mixture ratio with air.
by Roberto Ferrari
Wed Jan 29, 2020 12:01 pm
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Electrostatic lens sizing
Replies: 3
Views: 2345

Re: Electrostatic lens sizing

Hi Patrick
Thanks for sharing.
Not useful for my project but a friend of mine, in struggle with an electrostatic accelerator will enjoy your info.
by Roberto Ferrari
Wed Jan 22, 2020 8:04 pm
Forum: Announcements and Site Administration Topics
Topic: Annual Fundraiser: Let's Try This Again
Replies: 6
Views: 1833

Re: Annual Fundraiser: Let's Try This Again

Paul
Donation appears gone to Tanglewook Ventures.
Is it OK?
by Roberto Ferrari
Tue Jan 14, 2020 11:32 pm
Forum: Fusor and/or General Fusion Theory (& FAQs)
Topic: Increasing use of cylindrical fusors
Replies: 5
Views: 1621

Re: Increasing use of cylindrical fusors

Tim and Dan

But degassing until emptied of gasses, right?
Or do you think that there is a "push-pull" action, loading and outgassing, rytmically?
by Roberto Ferrari
Tue Jan 14, 2020 7:02 pm
Forum: Fusor and/or General Fusion Theory (& FAQs)
Topic: Increasing use of cylindrical fusors
Replies: 5
Views: 1621

Re: Increasing use of cylindrical fusors

Hi Jim

Please, comment on your experiences with titanium and degassing.
by Roberto Ferrari
Tue Dec 31, 2019 7:45 pm
Forum: Vacuum Technology (& FAQs)
Topic: Using diffusion pump oil in a mechanical pump
Replies: 6
Views: 878

Re: Using diffusion pump oil in a mechanical pump

Agustin Why do you start your long pursuit trying to use a wrong road? Mechanical pump oil has several properties, not only oriented to get a good vacuum but also to protect the steel parts inside the pump. Were are you based? Surely some provider of consumables for vacuum systems, as mass spectrome...