@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:t10-86.1>
  a isq:Entry ;
  rdf:type isq:Quantity ;
  rdf:type smart:TermEntry ;
  dcterms:identifier "10-86.1" ;
  skosxl:prefLabel "kerma"@en ;
  skosxl:altLabel "K"@en ;
  skos:definition "for uncharged ionizing radiation, differential quotient of stem:[E_\"tr\"] with respect to stem:[m], where stem:[E_\"tr\"] is the mean sum of the initial kinetic energies (<<iso80000-4>>) of all the charged ionizing particles liberated in a mass (<<iso80000-4>>) stem:[m] of a material:\n\n[stem%unnumbered]\n++++\nK = (\"d\"E_(\"tr\"))/(\"d\"m)\n++++\n"@en ;
  smart:hasBindingnessType "bindingness-type:normative" ;
  dcterms:isPartOf <isq:part-10> ;
  isq:hasUnit [
    skos:notation "Gy" ;
    skosxl:prefLabel "gray"@en
  ] ;
  isq:hasUnit [
    skos:notation "J/kg" ;
    skosxl:prefLabel "joule per kilogram"@en
  ] ;
  isq:hasUnit [
    skos:notation "m^2*s^(-2)" ;
    skosxl:prefLabel "square metre per second squared"@en
  ] ;
  skos:note "[stem%unnumbered]\n++++\n1 \"unitsml(Gy)\" = 1 \"unitsml(J/kg)\"\n++++\n\nSee the remarks for <<t10-81.1>>.\n\nThe name \"kerma\" is derived from Kinetic Energy Released in MAtter (or MAss or MAterial).\n\nThe quantity stem:[\"d\"E_\"tr\"] includes also the kinetic energy of the charged particles emitted in the decay of excited atoms, molecules, or nuclei.\n\nWhen the mass element stem:[\"d\"m] consists of air the term air kerma is used. It can be convenient to refer to a value of air kerma in free space or at a point inside a material different from air, e.g. to the air kerma at a point inside a water phantom.\n\nIn report 85a of the ICRU a definition with an equivalent meaning is given as:\n\nThe kerma, stem:[K], for ionizing uncharged particles, is the quotient of stem:[\"d\"E_\"tr\"] by stem:[\"d\"m], where stem:[\"d\"E_\"tr\"] is the mean sum of the initial kinetic energies of all the charged particles liberated in a mass stem:[\"d\"m] of a material by the uncharged particles incident on stem:[\"d\"m]:\n\n[stem%unnumbered]\n++++\nK = (\"d\"E_\"tr\")/(\"d\"m).\n++++\n"@en ;
  iso:urn <urn:iso:std:iso:80000:-10:ed-2:en:item:10-86.1> .