seed nuclei

seed nuclei

[′sēd ‚nü·klē‚ī]
(astrophysics)
Nuclei from which other nuclei are synthesized in stars.
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References in periodicals archive ?
During the thermal-pulsation phase of a middleweight star's evolution, some 100 million neutrons are buzzing through each cubic centimeter of its core, bombarding potential seed nuclei. Astrophysically speaking, this is a very low neutron density.
Since seed nuclei are scarce, cloud particles may grow large and then quickly precipitate out of the atmosphere.