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  • Electron accelerator on a chip

    From Jan Panteltje@21:1/5 to All on Thu Oct 19 04:41:47 2023
    Milestone: Miniature particle accelerator works:
    https://www.sciencedaily.com/releases/2023/10/231018115725.htm
    Researchers succeed in accelerating electrons using a nano device

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  • From whit3rd@21:1/5 to Jan Panteltje on Wed Oct 18 22:49:01 2023
    On Wednesday, October 18, 2023 at 9:41:56 PM UTC-7, Jan Panteltje wrote:
    Milestone: Miniature particle accelerator works: https://www.sciencedaily.com/releases/2023/10/231018115725.htm
    Researchers succeed in accelerating electrons using a nano device

    Yeah, but to keep those electrons going, it takes the same big storage rings we see at Stanford, DESY, Argonne... Beams that don't blink out after traveling a desktop length are how the economics work best.

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  • From Phil Allison@21:1/5 to Jan Panteltje on Wed Oct 18 23:27:19 2023
    Jan Panteltje wrote:-
    ---------------------------------
    Milestone: Miniature particle accelerator works: https://www.sciencedaily.com/releases/2023/10/231018115725.htm


    ** The title " Miniature particle accelerator" got me a thinkin'.

    It could also be describing a vacuum tube ( aka valve ) - inside of which electrons typically accelerate to a fraction of the speed of light taking about 1 or 2 nanoseconds to reach the anode.
    CRTs as used in scopes and TV sets do much the same, but use higher voltages to get even faster electrons but taking a bit more time about it.


    ...... Phil

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  • From Jan Panteltje@21:1/5 to Allison on Thu Oct 19 08:26:26 2023
    On a sunny day (Wed, 18 Oct 2023 23:27:19 -0700 (PDT)) it happened Phil
    Allison <pallison49@gmail.com> wrote in <5cec5b5b-7bb5-495b-8285-fab06eadf20en@googlegroups.com>:

    Jan Panteltje wrote:-
    ---------------------------------
    Milestone: Miniature particle accelerator works:
    https://www.sciencedaily.com/releases/2023/10/231018115725.htm


    ** The title " Miniature particle accelerator" got me a thinkin'.

    It could also be describing a vacuum tube ( aka valve ) - inside of which electrons typically accelerate to a fraction of the
    speed of light taking about 1 or 2 nanoseconds to reach the anode.
    CRTs as used in scopes and TV sets do much the same, but use higher voltages to get even faster electrons but taking a bit more
    time about it.


    ...... Phil

    Yes, that is why I keep an old color CRT monitor in the attic as my own 'particle accelerator'.
    And I still have and use a Trio CRT based analog oscilloscope,
    it can do TV too:
    https://panteltje.nl/panteltje/scope_tv/index.html

    But all that is a (lot) bigger than a chip...

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  • From Jeroen Belleman@21:1/5 to Jan Panteltje on Thu Oct 19 13:41:23 2023
    On 10/19/23 06:41, Jan Panteltje wrote:
    Milestone: Miniature particle accelerator works:
    https://www.sciencedaily.com/releases/2023/10/231018115725.htm
    Researchers succeed in accelerating electrons using a nano device

    And a big laser. And only 12keV. Still a long way to go
    before this gets anywhere.

    Jeroen Belleman

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  • From Anthony William Sloman@21:1/5 to Jeroen Belleman on Thu Oct 19 05:35:20 2023
    On Thursday, October 19, 2023 at 10:41:35 PM UTC+11, Jeroen Belleman wrote:
    On 10/19/23 06:41, Jan Panteltje wrote:
    Milestone: Miniature particle accelerator works: https://www.sciencedaily.com/releases/2023/10/231018115725.htm
    Researchers succeed in accelerating electrons using a nano device
    And a big laser. And only 12keV. Still a long way to go
    before this gets anywhere.

    If the main application is in medicine, 12keV might be enough. Soft, short range X-rays generated inside the body might be just what the doctor ordered.

    I'd be happier to see my tumours cooked by therapeutic ultra-sound. (if I had any tumours to cook), but an X-ray source that could be put right next to the tumour could be good too.

    --
    Bill Sloman, Sydney

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  • From John Walliker@21:1/5 to Anthony William Sloman on Fri Oct 20 07:34:31 2023
    On Thursday, 19 October 2023 at 13:35:26 UTC+1, Anthony William Sloman wrote:
    On Thursday, October 19, 2023 at 10:41:35 PM UTC+11, Jeroen Belleman wrote:
    On 10/19/23 06:41, Jan Panteltje wrote:
    Milestone: Miniature particle accelerator works: https://www.sciencedaily.com/releases/2023/10/231018115725.htm Researchers succeed in accelerating electrons using a nano device
    And a big laser. And only 12keV. Still a long way to go
    before this gets anywhere.
    If the main application is in medicine, 12keV might be enough. Soft, short range X-rays generated inside the body might be just what the doctor ordered.

    I'd be happier to see my tumours cooked by therapeutic ultra-sound. (if I had any tumours to cook), but an X-ray source that could be put right next to the tumour could be good too.


    But a small radioactive source can do that too, much more simply.

    John

    --
    Bill Sloman, Sydney

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  • From Anthony William Sloman@21:1/5 to John Walliker on Fri Oct 20 20:05:35 2023
    On Saturday, October 21, 2023 at 1:34:36 AM UTC+11, John Walliker wrote:
    On Thursday, 19 October 2023 at 13:35:26 UTC+1, Anthony William Sloman wrote:
    On Thursday, October 19, 2023 at 10:41:35 PM UTC+11, Jeroen Belleman wrote:
    On 10/19/23 06:41, Jan Panteltje wrote:
    Milestone: Miniature particle accelerator works: https://www.sciencedaily.com/releases/2023/10/231018115725.htm Researchers succeed in accelerating electrons using a nano device
    And a big laser. And only 12keV. Still a long way to go
    before this gets anywhere.
    If the main application is in medicine, 12keV might be enough. Soft, short range X-rays generated inside the body might be just what the doctor ordered.

    I'd be happier to see my tumours cooked by therapeutic ultra-sound. (if I had any tumours to cook), but an X-ray source that could be put right next to the tumour could be good too.

    But a small radioactive source can do that too, much more simply.

    But a small radioactive source is dangerously radioactive all the time. Something that can be switched off, and left off until it is in exactly the right place has a lot going for it.

    --
    Bill Sloman, Sydney

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