@prefix isq: .
@prefix smart: .
@prefix rdf: .
@prefix dcterms: .
@prefix skos: .
a isq:Entry ;
rdf:type isq:Quantity ;
rdf:type smart:TermEntry ;
dcterms:identifier "10-49" ;
skosxl:prefLabel "linear attenuation coefficient "@en ;
skosxl:altLabel "mu"@en ;
skosxl:altLabel "mu_l"@en ;
skos:definition "for uncharged particles of a given type and energy the differential quotient stem:[n] with respect to stem:[l], where stem:[n] is the fraction of stem:[N] incoming particles that experience interactions in traversing a distance (<>) stem:[l] in a given material:\n\n[stem%unnumbered]\n++++\nmu = (\"d\"n)/(\"d\"l) = 1/N (\"d\"N)/(\"d\"l)\n++++\n\nwhere stem:[\"d\"N] is the number of particles that experience interactions in traversing stem:[\"d\"l]\n"@en ;
smart:hasBindingnessType "bindingness-type:normative" ;
dcterms:isPartOf ;
isq:hasUnit [
skos:notation "m^(-1)" ;
skosxl:prefLabel "per metre"@en
] ;
skos:note "stem:[mu] is equal to the macroscopic total cross section stem:[ii(Sigma)_\"tot\"] for the removal of particles from the beam.\n\nUsing the relation stem:[mu_m = mu//rho] between the linear attenuation coefficient stem:[mu], the mass attenuation coefficient stem:[mu_m] (<>) and the density stem:[rho], the definition given for the mass attenuation coefficient in report 85a of the ICRU can be applied to the linear attenuation coefficient resulting in:\n\nThe linear attenuation coefficient, stem:[mu], of a material, for uncharged particles of a given type and energy, is the quotient of stem:[\"d\"N//N] by stem:[\"d\"l], where stem:[\"d\"N//N] is the mean fraction of the particles that experience interactions in traversing a distance stem:[\"d\"l] in the material:\n\n[stem%unnumbered]\n++++\nmu = 1/(\"d\"l) (\"d\"N)/N.\n++++\n\nThis definition has an equivalent meaning as the one given in column 4 of this item.\n\nSee also <>.\n"@en ;
iso:urn .