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10-52

atomic attenuation coefficient

URNurn:iso:std:iso:80000:-10:ed-2:en:item:10-52

https://metanorma.github.io/isq-smart/quantities/part-10/t10-52
urn:iso:std:iso:80000:-10:ed-2:en:item:10-52

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-10:ed-2:en:item:10-52

IEC

urn:iec:std:iec:80000-10:2019:::item:10-52

Designations

ENatomic attenuation coefficient

FRcoefficient d'atténuation atomique

Symbol

μ_{a}

Notation systems

Rendered

μ_{a}

AsciiMath

mu_"a"

LaTeX

\mu_{\text{a}}

Definition

quotient of the linear attenuation coefficient $μ$ (linear attenuation coefficient <ionizing radiation>) and the number density (particle number density), $n$ , of atoms in the substance:

μ_{a} = μ / n

quotient du coefficient d'atténuation linéique $μ$ (linear attenuation coefficient <ionizing radiation>) par le nombre volumique (particle number density) $n$ des atomes de la substance:

μ_{a} = μ / n

Units

m^{2}

square metre

View related quantities →

Notes

$μ$ is equal to the total cross section $σ_{tot}$ for the removal of particles from the beam.

$μ$ est égal à la section efficace totale $σ_{tot}$ pour l'élimination des particules du faisceau.

Voir aussi total cross section <atomic physics>.

Referenced by

total cross section <atomic physics>

Concept HierarchyPendrill (2024)

L²L² quantitiesLevel 0 · Kind

Broader concepts

◇ L² quantities

Characterizes

● atom● substance

Ontology
isq:Quantity smart:TermEntry

Class Hierarchy

smart:Entity smart:TermEntryisq:Quantity

A physical quantity as defined in ISO/IEC 80000, with associated symbols, definitions, and units of measurement.

Instance IRI

isq:t10-52

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	10-52
skosxl:prefLabel	"atomic attenuation coefficient"@en
skosxl:altLabel	"mu_"a""@en
skos:definition	quotient of the linear attenuation coefficient stem:[mu] (<<t10-49>>) and the number density (<<t10-62.1>>), stem:[n], o…
skos:note	stem:[mu] is equal to the total cross section stem:[sigma_"tot"] for the removal of particles from the beam. See also <…
isq:hasUnit	m^2 (square metre)
isq:hasDimension	isq:Dimension
smart:hasBindingnessType	bindingness-type:normative
dcterms:isPartOf	isq:part-10

Related Entities

isq:QuantityShape isq:part-10 isq:Unit isq:Dimension isq:hasDimension smart:TermEntry