@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:t10-24>
  a isq:Entry ;
  rdf:type isq:Quantity ;
  rdf:type smart:TermEntry ;
  dcterms:identifier "10-24" ;
  skosxl:prefLabel "decay constant"@en ;
  skosxl:altLabel "disintegration constant"@en ;
  skosxl:altLabel "lambda"@en ;
  skos:definition "quotient of stem:[-\"d\"N//N] and stem:[\"d\"t], where stem:[\"d\"N//N] is the mean fractional change in the number of nuclei in a particular energy state due to spontaneous transformations in a time interval of duration (<<iso80000-3>>) stem:[\"d\"t]:\n\n[stem%unnumbered]\n++++\nlambda = -1/N (\"d\"N)/(\"d\"t)\n++++\n"@en ;
  smart:hasBindingnessType "bindingness-type:normative" ;
  dcterms:isPartOf <isq:part-10> ;
  isq:hasUnit [
    skos:notation "s^(-1)" ;
    skosxl:prefLabel "per second"@en
  ] ;
  skos:note "For exponential decay, this quantity is constant.\n\nFor more than one decay channel,\n\n[stem%unnumbered]\n++++\nlambda = sum lambda_a\n++++\n\nwhere stem:[lambda_a] denotes the decay constant for a specified final state and the sum is taken over all final states.\n"@en ;
  iso:urn <urn:iso:std:iso:80000:-10:ed-2:en:item:10-24> .