@prefix isq: <https://w3id.org/standards/isq/ontologies/core/> .
@prefix smart: <https://example.org/smart-sdu/> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

<isq:t10-39>
  a isq:Entry ;
  rdf:type isq:Quantity ;
  rdf:type smart:TermEntry ;
  dcterms:identifier "10-39" ;
  skosxl:prefLabel "direction distribution of cross section <atomic physics>"@en ;
  skosxl:altLabel "sigma_(ii(Omega))"@en ;
  skos:definition "differential quotient of stem:[sigma] with respect to stem:[ii(Omega)], where stem:[sigma] is the cross section (<<t10-38.1>>) for ejecting or scattering a particle into a specified direction, and stem:[ii(Omega)] is the solid angle (<<iso80000-3>>) around that direction:\n\n[stem%unnumbered]\n++++\nsigma_(ii(Omega)) = \"d\"sigma // \"d\"ii(Omega)\n++++\n"@en ;
  smart:hasBindingnessType "bindingness-type:normative" ;
  dcterms:isPartOf <isq:part-10> ;
  isq:hasUnit [
    skos:notation "m^2*sr^(-1)" ;
    skosxl:prefLabel "square metre per steradian"@en
  ] ;
  isq:hasUnit [
    skos:notation "m^2" ;
    skosxl:prefLabel "square metre"@en
  ] ;
  skos:note "Quantities listed under <<t10-39>>, <<t10-40>> and <<t10-41>> are sometimes called differential cross sections.\n\nThe type of interaction needs to be specified.\n"@en ;
  iso:urn <urn:iso:std:iso:80000:-10:ed-2:en:item:10-39> .