@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:t10-18>
  a isq:Entry ;
  rdf:type isq:Quantity ;
  rdf:type smart:TermEntry ;
  dcterms:identifier "10-18" ;
  skosxl:prefLabel "nuclear quadrupole moment"@en ;
  skosxl:altLabel "Q"@en ;
  skos:definition "stem:[z] component of the diagonalized tensor of nuclear quadrupole moment:\n\n[stem%unnumbered]\n++++\nQ = (1/e) int (3z^2-r^2) rho(x,y,z) \"d\"V\n++++\n\nin the quantum state with the nuclear spin in the field direction (stem:[z]), where\n\nstem:[e]:: is the elementary charge (<<iso80000-1>>), +\nstem:[r^2 = x^2 + y^2 + z^2],\nstem:[rho(x,y,z)]:: is the nuclear electric charge density (<<iec80000-6>>), and\nstem:[\"d\"V]:: is the volume element stem:[\"d\"x] stem:[\"d\"y] stem:[\"d\"z]\n"@en ;
  smart:hasBindingnessType "bindingness-type:normative" ;
  dcterms:isPartOf <isq:part-10> ;
  isq:hasUnit [
    skos:notation "m^2" ;
    skosxl:prefLabel "square metre"@en
  ] ;
  skos:note "The electric nuclear quadrupole moment is stem:[eQ].\n\nThis value is equal to the stem:[z] component of the diagonalized tensor of quadrupole moment.\n"@en ;
  iso:urn <urn:iso:std:iso:80000:-10:ed-2:en:item:10-18> .