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B Alpha decay produces electron surplus?

  1. Jan 28, 2017 #1
    Hi! I recently learned about the Alpha decay, where the atomic Nukleus emittes Alpha-Particles. I was wonderin if a material, which emittes such Alpha Particles has a surplus of electrons and so a negativ electronic charge after the decay. Because it loses Protons but stays with the electrons...? Maybe somebody who is more educated with nuklear physics than me can help me out, if such a "self charging" material exists? Thank you! :)
  2. jcsd
  3. Jan 28, 2017 #2


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    Staff: Mentor

    The alpha nuclei are typically stopped within the material. The electrons re-arrange a bit afterwards to make everything neutral again (nothing is a perfect insulator).

    Very small particles in vacuum, where the alpha particle can escape and electrons cannot flow, can get charged temporarily.
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