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10-65

diffusion coefficient for fluence rate

URNurn:iso:std:iso:80000:-10:ed-2:en:item:10-65

https://metanorma.github.io/isq-smart/quantities/part-10/t10-65
urn:iso:std:iso:80000:-10:ed-2:en:item:10-65

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-10:ed-2:en:item:10-65

IEC

urn:iec:std:iec:80000-10:2019:::item:10-65

Designations

ENdiffusion coefficient for fluence rate

FRcoefficient de diffusion pour le débit de fluence

Symbol

D_{Φ}

D

Notation systems

Rendered

D_{Φ}

Rendered

D

AsciiMath

D_Phi

AsciiMath

D

LaTeX

D_{\Phi}

LaTeX

D

Definition

proportionality constant between the particle current density $J$ (particle current density) and the gradient of the particle fluence rate $Φ$ (particle fluence rate):

J = - D \cdot \nabla Φ

constante de proportionnalité entre la densité de courant de particules $J$ (particle current density) et le gradient du débit de fluence de particules $Φ$ (particle fluence rate) :

J = - D \cdot \nabla Φ

Units

m

metre

View related quantities →

Notes

For a particle of a given speed $ν$ :

D_{\dot{Ψ}} (ν) = - \frac{J_{ν, x}}{\partial {(\dot{Ψ})}_{ν} / \partial x}

and

ν \cdot D_{\dot{Ψ}} (ν) = - D_{n} (ν)

Pour une particule d'une vitesse donnée $ν$ :

D_{\dot{Ψ}} (ν) = - \frac{J_{ν, x}}{\partial {(\dot{Ψ})}_{ν} / \partial x}

ν \cdot D_{\dot{Ψ}} (ν) = - D_{n} (ν)

Concept HierarchyPendrill (2024)

Llength-type quantitiesLevel 0 · Kind

Broader concepts

◇ length-type 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:t10-65

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	10-65
skosxl:prefLabel	"diffusion coefficient for fluence rate"@en
skosxl:altLabel	"D_Phi"@en"D"@en
skos:definition	proportionality constant between the particle current density stem:[bb(ii(J))] (<<t10-48>>) and the gradient of the part…
skos:note	For a particle of a given speed stem:[nu]: [stem%unnumbered] ++++ D_(dot Psi)(nu) = -(J_(nu,x))/(del (dot Psi)_nu//del …
isq:hasUnit	m (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