20 Comments

  1. I spent a lot of time to locate something like
    this

  2. This sounds so interesting!

  3. Yeah this was a good read. Thanks for sharing

  4. Thank you for making quantum physics less scary for the rest of us 🙂

  5. Energy capturing, wow, fascinating! Wonder where this will lead!

  6. Wow! Very understandable from a non STEM background!

    1. Author

      Thanks! I tried to give an explanation that would reach out to different scientific backgrounds, but I’m really happy to hear that I could provide a clear explanation even if you’re not in STEM 🙂

  7. Nicely written and structured article. I like how you create a picture in the head of the reader which makes it easy to understand the process.

    My comments to the physics:
    The energy of the outgoing electron can be at most that of the incoming electron, which is due to energy conservation.
    You might want to mention that the energy transfer is only possible due to the long-range Coulomb interaction between the two electrons on the different atoms. Otherwise, the excess energy would rather be emitted as a photon. (Since radiative decay is a much slower, ICEC is more likely to happen.)
    It might be also helpful to understand the difference to the Auger process (i.e. why can the energy not be transfered to another electron in atom A).
    The electron capture can also be followed by the ICD process, i.e. the electron in atom A relaxes to a lower bound state and the energy that is released there is handed to the electron in atom B. If I remember correctly, this sequence of processes is even more efficient.

    1. I want to withdraw my comment to the energies: I forgot about the potential energy of the incoming electron. Thus, it is indeed possible that the outgoing electron can have a higher kinetic energy than the incoming one. Sorry about that 😉

  8. Really nice and easy to understand explanation of the ICEC process. Very interesting project.

  9. Thank you for the nice explanation. Though my field is totally irrelevant, thanks to your simple to understand explanation I feel I can grasp the concept.

  10. A very good intro and effective explanation of a complicated phenomenon! A couple of question come to my mind:
    Are you using the actual data from the observations in the simulation process?
    Also, which elements are used as a target of the incoming electron?
    And how does reactivity of the atom in the target element (Atom A) impact the result? (I assume this will be investigated using the simulation)
    Looking forward to hear about the progress, best of luck!

    1. Author

      Ni Nassi, so ICEC is known to be a phenomena that occurs, however it has not been experimentally observed. But there is analytical proof that it is theoretically possible. (However, a similar process called ICD, which doesn’t involve electron capture has indeed been experimentally observed). As of now we postulate to use heavier atoms such as rubidium and Barium(2+).
      The probability of ICEC occurs does indeed has a lot to do with the reactivity of our atom A, but we shall see in the results to come some more insights regarding that!

  11. This was an easy to follow explanation of what seems like a complicated and interesting topic. Best of luck with the simulations on it!

  12. do you know if ICEC has been observed experimentally?

    1. Author

      Hi Edward, so although ICEC has not been experimentally observed, we do have an analytical proof that it is theoretically possible. However, a similar process called ICD, which doesn’t involve electron capture component, has indeed been experimentally observed. Nonetheless, we can take it to be fact that ICEC inherently occurs, we just haven’t observed it yet per se 🙂

  13. Thanks for the very clear explanation

  14. Very good summary! ICEC is the most interesting process going on at HZB.

    1. Author

      I agree!

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