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difference between beta decay and positron emission

Discussion in 'DAT Discussions' started by gooperwooper, Aug 22, 2015.

  1. gooperwooper

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    what's the difference?
     
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  3. 510586

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    One loses an electron (beta decay), the other loses a positron (like an electron with a + charge instead of a - charge).
     
  4. Graffix

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    yep! beta emission is the loss of an electron, a beta particle, and results in a neutron being turned into a proton. While positron emission losses a positron and results in a proton being turned into a neutron. So in both cases the atomic mass does not by a significant amount but the atomic number changes in both cases.
     
  5. gooperwooper

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    okay -- strange... I remember chad vids saying the beta decay can mean both loss of electron or loss of a positron (since they're both beta particles).
     
  6. 510586

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    In physics and in all the chem problems I've been doing so far, we have always treated beta decay as loss of electron. Lmk if someone says different though
     
  7. enamel88

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    Beta decay: 0/-1B, where neutron ---->proton
    positron emission: 0/+1B where proton--->neutron
     
  8. Graffix

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    I misspoke, let me clarify. A beta emission means a beta particle (positive or negative it's still a beta particle) is emitted. A beta particle can either be positively charged (a positron, a type of beta particle) like in positron emission, or it can be negatively charged (an electron, also a type of beta particle) like in electron emission. Both of these are considered a Beta Emission.

    Source: https://en.wikipedia.org/wiki/Beta_particle
     
  9. dentsmiley

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    The way Chad explained it, a positron is kind of like a subtype of a beta (B).

    Beta (B) particle is an electron with a mass # of 0 and an atomic # of -1.
    In beta decay/emission, a beta particle aka electron is emitted from the nucleus and it turns a neutron into a proton.

    A positron is a positively charged electron, so it has the same mass # as an electron (aka beta), but with a positive charge. So the mass # is 0, but the atomic # is +1.
    In postron emission, a positron is emitted from the nucleus and it turns a proton into a neutron.

    Hope this helps :).
     
    #8 dentsmiley, Aug 26, 2015
    Last edited: Aug 26, 2015

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