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Viewing 15 posts - 91 through 105 (of 199 total)
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  • in reply to: Engineering help requested #13044
    Francisl
    Participant

    @Lerner: If you have sources from semiconductor people that would know about forming mists and keeping particles away from surfaces, can you share them?

    This link may help.
    Silicon Semiconductors Chamber Cleaning

    Here is another link of contacts.
    FABVANTAGE CONSULTING

    in reply to: Engineering help requested #13036
    Francisl
    Participant

    Another thought occurs to me. Normal chemistry will be complicated by the intense photo-ionization in the chamber. I don’t know if that will create compounds faster or lead to their decomposition.
    It would be interesting to coat some samples of beryllium with boron and beryllium/boron compounds and expose them to intense x-rays to see what would happen. That could be a good experiment for a university lab.

    in reply to: Engineering help requested #13035
    Francisl
    Participant

    Another thought that I had is that right after the electrical discharge the particles will have an electrostatic charge. An electrostatic precipitator inside the chamber could be formed by having a residual charge on the electrodes with respect to a collector plate outside the path of the plasma front. My guess is that the maximum particle concentration will be close to the pinch area so a collector could be placed close to that area.

    in reply to: Engineering help requested #13032
    Francisl
    Participant

    I suggest using jets to create a laminar flow of cool fuel along the surface of the electrodes. That would cool the surface of the electrodes and block the boron particles from touching the electrodes. Vacuum pumps would have to exhaust the chamber to maintain the proper pressure and remove the boron particles. The exhausted fuel could be cleaned, cooled and recycled.

    in reply to: Could electrodes be made of graphitic sintered carbon? #13017
    Francisl
    Participant

    Jarr wrote: I found this this old investigation of beryllium tungsten being a superconductor. http://www.jetpletters.ac.ru/ps/1253/article_18959.pdf . What if the electrode was made of a beryllium tungsten alloy cooled with liquid helium to the 4 degrees kelvin to make it a superconductor?

    It is an interesting idea but I think the fusion fuel would freeze to the electrodes.

    in reply to: Fukushima nightmare #13007
    Francisl
    Participant

    I have some questions. Is this radioactive waste chemically corrosive? Is the radiation so intense that it destroys the structural integrity of any containers? Are the spent fuel rods and damaged reactors experiencing natural radioactive decay or are sub-critical nuclear chain reactions occurring?

    in reply to: Fukushima nightmare #13005
    Francisl
    Participant

    There have been some radiation robots working at Fukushima. The ideal robot doesn’t seem to exist yet.

    in reply to: A question #12993
    Francisl
    Participant

    Is your concept similar to this plasma device?
    I don’t know how much energy it could store or how the energy would be extracted.

    in reply to: An Argument for Fusion #12969
    Francisl
    Participant

    Here is another reason to support fusion. Scientists Wary of Shale Oil and Gas as U.S. Energy Salvation

    in reply to: An Argument for Fusion #12968
    Francisl
    Participant

    Your points and the link are pretty good.
    My opinion is that the US and probably Canadian governments are relying on carbon fuels for predictable economic growth and income. They are afraid of things that upset the status quo. They won’t seriously fund fusion or advanced fission reactors unless they feel threatened by big advances in foreign powers like Russia or China.

    in reply to: Vote for fusion at the ClimateColab #12918
    Francisl
    Participant

    Congratulations on your ranking in the contest.

    in reply to: Password reset form is (no longer) broken #12889
    Francisl
    Participant

    Breakable wrote: Hi All,
    Password reset form is unfortunately broken and cannot be fixed without affecting other areas. Please get in touch if you need password reset:
    https://focusfusion.org/index.php/site/toc/contact_us

    I don’t need to reset my password but I tried your link and it gives me an error message.
    Here is a link from a help forum. I hope it helps.

    Francisl
    Participant

    zapkitty wrote:

    How many threads are we talking about? What topics?

    Definitely a horrible forum design.

    Unknown. It only came to my attention when I realized that a lot of topics
    had gone flat-out missing in “Noise”

    Replies to the banned are AWOL… neither deleted nor accessible and
    throwing this error message:

    The following errors were encountered
    You are not authorized to perform this action

    I’m just wondering how far the damage goes because if one of the banned
    replied in a non-Noise thread then any replies chained off of that post,
    even sensible, relevant ones, would be dereferenced as well.

    Could you be missing necessary permissions?

    Francisl
    Participant

    I like your list of items and the prices. The Smithsonian items could be a good speculative investment for the right persons or organizations.

    Do you have the ability to handle a large quantity of orders?

    Francisl
    Participant

    The articles refer to Voss Scientific. They can probably run the software for companies but I have no idea what that service would cost.

Viewing 15 posts - 91 through 105 (of 199 total)