IUPAC - flux of a beam of particles (09251)

flux of a beam of particles

symbol:

Φ

, unit:

s^{- 1}

https://doi.org/10.1351/goldbook.09251

Φ = d N / d t

, where

N

is number of particles of a specified type and

t

is time.

Notes:

For a parallel beam, fluence rate and flux density are equivalent measures.
SI unit: $s^{- 1}$ . For a beam of charged particles (ions) the flux is expressed in ampere, i.e. $F \times z e$ , where $z$ is the charge on a particle and $e$ the elementary charge ( $1.602 176 634 \times 10^{- 19} C$ ).

Source:
PAC, 2020, 92, 1781. (Glossary of methods and terms used in surface chemical analysis (IUPAC Recommendations 2020)) on page 1804 [Terms] [Paper]

Citation: 'flux of a beam of particles' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.09251 RIS BibTex EndNote

Div. V Text XML JSON

Alphabetical Index

Additional Indexes

Version 3.0.1 (8093 Terms)

flux of a beam of particles