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Quark spatial change in nucleons & nuclear stability

  1. Jan 24, 2010 #1
    I am curious to know if there have been any experiments to measure change in nuclear disintegration rates/ gamma emissions with change of distance between quarks in nucleons?

    Thank you.

  2. jcsd
  3. Jan 24, 2010 #2
    Yes, it's called deeply virtual Compton scattering and gives access to general parton distributions. If you are interested I can provide references.
  4. Jan 24, 2010 #3
    Yes I would be very interested in the references. Do the papers describe the mechanism of the Compton scattering and how it changes the position of the quarks within the nucleons? I am particularly interested in the distance changes between the quarks and the amount of change in the nuclide half life. Is this a quantum effect so that certain minimum distance changes have to occur before a nuclear rearrangement occurs? I am a non-mathematician (Professor of Radiology) so after reading the papers perhaps I could follow up with more questions.

    Thank you.
  5. Jan 24, 2010 #4
    It is a rather technical topic. For instance :
    Leading twist nuclear shadowing, nuclear generalized parton distributions and nuclear DVCS at small x
    So, this is exactly a description of gamma emission parameterized in terms of quark-quark correlations.

    To my knowledge, the theory is not developed to the point where you are going to have an answer for half-lives however. In practice of course, we have no means to control the quarks positions so we could record changes in life-time. So at best, you would only have theoretical estimates.
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