@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:t10-44>
  a isq:Entry ;
  rdf:type isq:Quantity ;
  rdf:type smart:TermEntry ;
  dcterms:identifier "10-44" ;
  skosxl:prefLabel "particle fluence rate"@en ;
  skosxl:altLabel "ii(Phi)"@en ;
  skos:definition "differential quotient of fluence stem:[ii(Phi)] (<<t10-43>>) with respect to time (<<iso80000-3>>):\n\n[stem%unnumbered]\n++++\nii(Phi) = (\"d\"ii(Phi))/(\"d\"t)\n++++\n"@en ;
  smart:hasBindingnessType "bindingness-type:normative" ;
  dcterms:isPartOf <isq:part-10> ;
  isq:hasUnit [
    skos:notation "m^(-2)*s^(-1)" ;
    skosxl:prefLabel "per square metre second"@en
  ] ;
  skos:note "The word \"particle\" is usually replaced by the name of a specific particle, for example proton fluence rate.\n\nThe distribution function expressed in terms of speed and energy, stem:[ii(Phi)_nu] and stem:[ii(Phi)_E], are related to by:\n\n[stem%unnumbered]\n++++\nii(Phi) = int ii(Phi)_nu \"d\"nu = int ii(Phi)_E \"d\"E.\n++++\n\nThis quantity has also been termed particle flux density. Because the word \"density\" has several connotations, the term \"fluence rate\" is preferred. For a radiation field composed of particles of velocity stem:[nu], the fluence rate is equal to stem:[n*nu] where stem:[n] is the particle number density.\n\nSee Remarks for <<t10-43>>.\n\nIn report 85a of the ICRU a definition with an equivalent meaning is given as:\n\nThe fluence rate, stem:[ii(Phi)], is the quotient of stem:[\"d\"ii(Phi)] and stem:[\"d\"t], where stem:[\"d\"ii(Phi)] is the increment of the fluence in the time interval stem:[\"d\"t]:\n\n[stem%unnumbered]\n++++\nii(Phi) = (\"d\"ii(Phi))/(\"d\"t)\n++++\n\nSee also <<cls-0.3>>.\n"@en ;
  iso:urn <urn:iso:std:iso:80000:-10:ed-2:en:item:10-44> .