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Section 10-382 entries

10-38.1cross section <atomic physics>10-38.2total cross section <atomic physics>

10-38.1

cross section

URNurn:iso:std:iso:80000:-10:ed-2:en:item:10-38.1

https://metanorma.github.io/isq-smart/quantities/part-10/t10-38.1
urn:iso:std:iso:80000:-10:ed-2:en:item:10-38.1

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-10:ed-2:en:item:10-38.1

IEC

urn:iec:std:iec:80000-10:2019:::item:10-38.1

Designations

ENcross section

FRsection efficace

Symbol

σ

Notation systems

Rendered

σ

AsciiMath

sigma

LaTeX

\sigma

Definition

for a specified target entity and for a specified reaction or process produced by incident charged or uncharged particles of a given type and energy, the quotient of the mean number of such reactions or processes and the incident-particle fluence (particle fluence)

pour une entité cible spécifiée et pour une réaction ou un processus spécifié produit par des particules incidentes chargées ou non chargées de type et d'énergie donnés, quotient du nombre moyen de telles réactions ou de tels processus par la fluence des particules incidentes (particle fluence)

Units

m^{2}

square metre

View related quantities →

b

barn

View related quantities →

Notes

The type of process is indicated by subscripts, e.g. absorption cross section $σ_{a}$ , scattering cross section $σ_{s}$ , fission cross section $σ_{f}$ .

1 barn (b) = 10^{- 28} unitsml(m^2)

Le type de processus est indiqué par un indice, par exemple section efficace d'absorption $σ_{a}$ , section efficace de diffusion $σ_{s}$ , section efficace de fission $σ_{f}$ .

1 barn (b) = 10^{- 28} unitsml(m^2)

Referenced by

total cross section <atomic physics>direction distribution of cross section <atomic physics>energy distribution of cross section <atomic physics>direction and energy distribution of cross section <atomic physics>volumic cross section volumic total cross section particle fluence energy fluence

Concept HierarchyPendrill (2024)

L²L² quantitiesLevel 0 · Kind

Broader concepts

◇ L² quantities

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:t10-38.1

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	10-38.1
skosxl:prefLabel	"cross section <atomic physics>"@en
skosxl:altLabel	"sigma"@en
skos:definition	for a specified target entity and for a specified reaction or process produced by incident charged or uncharged particle…
skos:note	The type of process is indicated by subscripts, e.g. absorption cross section stem:[sigma_"a"], scattering cross section…
isq:hasUnit	m^2 (square metre)stem:["b"] (barn)
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