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Neutron Drip

(neutrons exiting from nuclei)

Neutron Drip is neutrons exiting from atomic nuclei. This occurs if a nucleus is Neutron Heavy, i.e., too many neutrons to be stable. A grid of atomic numbers versus atomic weights has a roughly diagonal region of stability, and the line between stable and "too many neutrons" is termed the Nuclear Drip Line.

Some extreme pressures that occur in Neutron Stars also can trigger neutron drip from otherwise-stable nuclei, resulting in some neutron star layers including both nuclei and free neutrons.


(atoms,nucleosynthesis)
http://en.wikipedia.org/wiki/Nuclear_drip_line

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