Jarek Student

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  • Jarek

    Replied to the thread Electron-assisted fusion.
    Post
    511keV is just rest mass of electron - required e.g. to build it from photons (EM waves) during pair creation.

    Hence, energy conservation doesn't allow energy of electric field of electron to exceed 511 keVs.
    However, naive E ~ 1/r^2 assumption for…
  • Jarek

    Replied to the thread Electron-assisted fusion.
    Post
    Exactly, as this Feynman's lecture says: "the dependence on E is uniquely determined by dimensional analysis", getting sigma ~ 1/E^2.

    This is the line I was referring to.
    We are interested in size of non-Lorentz-contracted electron, so we need to…
  • Jarek

    Replied to the thread Electron-assisted fusion.
    Post
    (Quote from Paradigmnoia)


    Sounds like optical lattice ( https://en.wikipedia.org/wiki/Optical_lattice ) - made by laser beams ... but I don't think you could test electron size this way - they are light and repulse each other.
  • Jarek

    Replied to the thread Electron-assisted fusion.
    Post
    (Quote from Wyttenbach)


    By resting I have meant just not Lorentz contracted (gamma=1, v=0), what affects the size we are interested in.


    @ THHuxleynew,


    Regarding requirements for electron size, the energy of electric field E ~ 1/r^2 is infinity if…
  • Jarek

    Replied to the thread Electron-assisted fusion.
    Post
    (Quote from THHuxleynew)


    Please elaborate - I couldn't find any details in this link? ... Or previously looking through literature for a few days ... or trying to discuss it in a few forums.


    Sure, Wikipedia points Dehmelts 1988 paper with e.g. 10^-22 m…
  • Jarek

    Replied to the thread Electron-assisted fusion.
    Post
    It is crucial to understand size of electron here - while "everybody knows that electron is point-like", I have spent a few days to find experimental evidence to bound its size ... and literally nothing.


    There is usually referenced Dehmelt's paper…