On Wed, Dec 9, 2015 at 9:00 PM, <mix...@bigpond.com> wrote:

The nuclear force is very short range.


Here is where I'm inclined to part with conventional wisdom.  Consider that
1 barn is the approximate area of a medium-sized nucleus presented to an
oncoming neutron, that nuclei such as 135Xe have neutron-capture cross
sections of 1e6 barns, and that with a neutron the Coulomb interaction is
not involved.  It seems to me that the nuclear force must be working at
longer distance than the usual 1 fm that is mentioned.  Perhaps a more
nuanced analysis would show that it works on very fast nuclei at short
distances and on slower-moving nuclei at longer distances.

Eric

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