Measuring Vaccum with electrical discharge

Every fusor and fusion system seems to need a vacuum. This area is for detailed discussion of vacuum systems, materials, gauging, etc. related to fusor or fusion research.
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John Futter
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Measuring Vaccum with electrical discharge

Post by John Futter » Thu May 09, 2019 9:12 pm

Measuring high vacuum with an electrical discharge
From a very old book written in 1945
enjoy
20190510091503083.pdf
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Rex Allers
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Re: Measuring Vaccum with electrical discharge

Post by Rex Allers » Fri May 10, 2019 6:41 am

Nice reference, John. The old original ones are often the best.

Do you have the title and author of the whole document?
Rex Allers

Cai Arcos
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Re: Measuring Vaccum with electrical discharge

Post by Cai Arcos » Fri May 10, 2019 9:03 am

Rex Allers wrote:
Fri May 10, 2019 6:41 am
Nice reference, John. The old original ones are often the best.

Do you have the title and author of the whole document?
Rex:
"Manual of Vacuum Practice", by L.H Martin.
I found it in Amazon. If everything goes well, I will order one soon:
https://www.amazon.com/Manual-Vacuum-Pr ... B001FT0NUC
EDIT:
John:
I see in the text that there is a reference to Appendix 12, which should cointain tabulated tables for tube characteristics. ¿Could you please post it?
I would be extremely grateful.

John Futter
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Re: Measuring Vaccum with electrical discharge

Post by John Futter » Fri May 10, 2019 9:40 am

Cai
Its the weekend here now and I left the book at work where the wonderful photocopier that copies to PDF is
i'll try to do it on Monday for you

Cai Arcos
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Re: Measuring Vaccum with electrical discharge

Post by Cai Arcos » Fri May 10, 2019 10:03 am

John Futter wrote:
Fri May 10, 2019 9:40 am
Cai
Its the weekend here now and I left the book at work where the wonderful photocopier that copies to PDF is
i'll try to do it on Monday for you
Obviously, there is no rush whatsoever.
Thank you very much! I have been searching info on this type of vacuum gauge for about a month with very little success until now.

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Richard Hull
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Re: Measuring Vaccum with electrical discharge

Post by Richard Hull » Fri May 10, 2019 6:43 pm

Cai, please avoid quoting. It is just not done here. We are intelligent people and can remember posts within a single thread. We don't need to re-read over and over again.

If you find any quoting in the vast collection of thousands of posts here, you will find that at some point, we have asked the new person to avoid quoting.

Richard
Progress may have been a good thing once, but it just went on too long. - Yogi Berra
Fusion is the energy of the future....and it always will be
Retired now...Doing only what I want and not what I should...every day is a saturday.

Cai Arcos
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Re: Measuring Vaccum with electrical discharge

Post by Cai Arcos » Fri May 10, 2019 8:17 pm

Richard:
You are correct. I did it by impulse from other forums, sorry. I will not make the same mistake again.

John Futter
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Re: Measuring Vaccum with electrical discharge

Post by John Futter » Sun May 12, 2019 9:23 pm

appendix 12 plus more!!
appendix12.pdf
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Cai Arcos
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Re: Measuring Vaccum with electrical discharge

Post by Cai Arcos » Mon May 13, 2019 2:53 pm

Books are not made like this anymore....
I bet a new book would provide a reference to some obscure paper containing this data without actually posting it and assuming the reader can access it...
Thanks for posting it!

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