proton-rich nucleus

proton-rich nucleus

[¦prō‚tēn ‚rich ′nü·klē·əs]
(nuclear physics)
An atomic nucleus in which the ratio of proton number to neutron number is much larger than that of nuclei found in nature.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.