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10-63

recombination coefficient

URNurn:iso:std:iso:80000:-10:ed-2:en:item:10-63

https://metanorma.github.io/isq-smart/quantities/part-10/t10-63
urn:iso:std:iso:80000:-10:ed-2:en:item:10-63

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-10:ed-2:en:item:10-63

IEC

urn:iec:std:iec:80000-10:2019:::item:10-63

Designations

ENrecombination coefficient

FRcoefficient de recombinaison

Symbol

α

Notation systems

Rendered

α

AsciiMath

alpha

LaTeX

\alpha

Definition

coefficient in the law of recombination:

- \frac{d n^{+}}{d t} = - \frac{d n^{-}}{d t} = α \cdot n^{+} n^{-}

where $n^{+}$ and $n^{-}$ are the ion number densities (ion number density) of positive and negative ions, respectively, recombined during a time interval of duration $d t$ (ISO 80000-3: Space and time)

coefficient de la loi de recombinaison :

- \frac{d n^{+}}{d t} = - \frac{d n^{-}}{d t} = α \cdot n^{+} n^{-}

où $n^{+}$ et $n^{-}$ sont les nombres volumiques d'ions (ion number density) respectivement positifs et négatifs, recombinés pendant un intervalle de temps de durée $d t$ (ISO 80000-3: Space and time)

Units

m^{3} \cdot s^{- 1}

cubic metre per second

View related quantities →

Notes

The widely used term "recombination factor" is not correct because "factor" should only be used for quantities with dimension 1.

The terms $\frac{d n^{+}}{d t}$ , $\frac{d n^{-}}{d t}$ are differential quotients.

L'expression communément utilisée en anglais «recombination factor» n'est pas correcte dans la mesure où il convient de n'utiliser le terme «factor» que pour des grandeurs sans dimension.

Les termes $\frac{d n^{+}}{d t}$ , $\frac{d n^{-}}{d t}$ sont des quotients différentiels.

Concept HierarchyPendrill (2024)

L³ T⁻¹L³ T⁻¹ quantitiesLevel 0 · Kind

Broader concepts

◇ L³ T⁻¹ quantities

Characterizes

● ion

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:t10-63

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	10-63
skosxl:prefLabel	"recombination coefficient"@en
skosxl:altLabel	"alpha"@en
skos:definition	coefficient in the law of recombination: [stem%unnumbered] ++++ -("d"n^+)/("d"t) = -("d"n^-)/("d"t) = alpha * n^+ n^- +…
skos:note	The widely used term "recombination factor" is not correct because "factor" should only be used for quantities with dime…
isq:hasUnit	m^3*s^(-1) (cubic metre per second)
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