Gizmodo: Physicists Caught Two Atoms 'Talking' to Each Other.
   [1]https://gizmodo.com/physicists-caught-two-atoms-
   talking-to-each-other-1846967872
   Jim Bell's comment follows
   "Eureka!!!"
   This is EXACTLY the effect that I've long anticipated would exist!  It
   is the very basis of many (most?) of my isotopic inventions.
   Two close atoms, each with 'spin', INTERACT due to their (physically
   close) magnetic fields.
   Eventually, after this is fully accepted, this will be seen as
   obvious:. Why shouldn't two nearby magnetic dipoles interact by their
   magnetic fields?
   This will be seen to be the basis for most of my isotope-modified alloy
   inventions.  In time, this will be recognized to explain why there are
   'eutectics', as I've long recognized.
   Here is the lead/tin phase-diagram, the basis for the long-used "63
   tin/37 lead" "eutectic solder" that is now out of favor due to its
   toxic lead content.
   [2]https://images.app.goo.gl/ctFNAyL4BCRs4Muh8
   Notice that the melting point of this alloy is at a minimum at the
   point where the tin content is 63% by weight, and the lead content is
   37% by weight.
   This, I've long believed since early 2009, is caused by the contents of
   lead-isotope Pb-207, the only stable lead isotope with 'spin', making
   up 22.1% of natural lead atoms.
   [3]https://www.webelements.com/lead/isotopes.html
   Similarly, tin in nature consists of ten (!) stable isotopes, of which
   three contain nuclei with 'spin'. Sn-115, Sn-117, and Sn-119.
   [4]https://www.webelements.com/tin/isotopes.html
   Note:.  This coupled-'spin' effect is presumably NOT the basis for my
   isotope-modified optical-fiber invention. In that, passing infrared
   photons 'kick'
   'spin'-containing atoms, losing a tiny amount of energy with each
   interaction.  That loss leads to the tiny residual of 0.1419
   dB/kilometer of optical loss that Sumitomo Electric found in 2017.
   [5]https://global-sei.com/company/press/2017/03/prs029.html

References

   1. https://gizmodo.com/physicists-caught-two-atoms-talking-to-each-other-1846967872
   2. https://images.app.goo.gl/ctFNAyL4BCRs4Muh8
   3. https://www.webelements.com/lead/isotopes.html
   4. https://www.webelements.com/tin/isotopes.html
   5. https://global-sei.com/company/press/2017/03/prs029.html