Is photodisintegration belongs to a form of spallation? Is photodisintegration only limited to nucleus hit by high energy gamma-ray, whereas the nucleus in spallation can be hit by any high energy particles?
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1I would not use spallation to refer to a photon interacting with a nucleus. May depend on usage in various subfields - for example I would use photofission, not photodisintegration, perhaps another subfield distinction. – Jon Custer Jun 28 '21 at 13:24
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@JonCuster both photodisintegration and Photofission seem to have Wikipedia pages and the distinction seems to be on what the outcome is; if it's light particle emission like a nucleon or alpha particle then it's the former. If what happens can be characterized as nuclear fission (which has it's own lower mass limit ambiguity), then it's the latter. – uhoh Jun 28 '21 at 23:15
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1@uhoh - and the terminology seems to have drifted or simplified. Going back to the 1950's, articles specified photoprotons or photoneutrons or photodeuterons depending on what came out. – Jon Custer Jun 28 '21 at 23:24
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@JonCuster you regularly out-earliest-applicable-reference me, kudos! – uhoh Jun 28 '21 at 23:35