# Beam emittance (Nuclear physics) { "id": "S94009566", "title": "Beam emittance (Nuclear physics)", "url": "/topics/S94009566", "kind": "topic-directory", "aeo_cohort": "topic-directory", "provider": "lcsh", "revision": "6a294c188ddf84f2", "catalogue_revision": "f050b5d4780b1289", "numeric_address": "921197248354845284", "address_version": "morton4x16-v1", "coordinates": [ 0, 22, 27107, 30720 ], "answer_status": "Directory metadata; local answer requires separate source review", "truth_status": "Subject descriptor, not a factual answer or a demonstrated knowledge gap" } Directory metadata is not a factual answer or evidence of a global knowledge gap. Source: https://id.loc.gov/authorities/subjects/sh94009566 No owner-reviewed local answer yet.