Astrophysics (Index)About

iron peak

(relatively high abundance of iron and nearby elements)

The iron peak is a peak on the graph relating element abundances graphed to atomic number. The peak is centered around iron and shows high abundances of some elements with similar atomic numbers.

The iron peak is theorized to result from the high stability of the iron nucleus due to its high binding energy and that nuclei are synthesized by step-wise enlargement (i.e., the alpha process), and iron's resulting stability allows fewer nuclei to progress further to heavier elements.

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