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Photoionization

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Summary

The ionization of an atom or ion by absorption of a photon, producing an ion and a continuum electron when energy and selection conditions permit.

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Electromagnetic radiationPhotoionization

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

When photon energy exceeds an applicable ionization threshold and the transition matrix element is nonzero, electromagnetic radiation can eject a bound electron from an atom or ion.

How to interpret this relation type

The source field, particle, charge, current, or interaction couples to, acts on, binds, forms, or stabilizes the target in the stated regime. The edge label and detail must identify the exact coupling, interaction, or binding claim and its qualifications.

Relation sources

Atomic ionizationPhotoionization

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

Photoionization is the subclass of atomic ionization driven by photon absorption, distinguished from collisional, field, or other ionization mechanisms.

How to interpret this relation type

The target is a member or subtype of the broader source class.

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