partikelström
partikelström is a term used in physics to describe the movement of discrete particles, such as electrons, ions, or atoms, through a medium. It is analogous to electric current, which represents the flow of charge, but a particle current focuses on the number of particles passing a given surface per unit time rather than the charge they carry. The particle flux J is often expressed in units of particles per square meter per second (m⁻²s⁻¹) and can be related to the current density j through j = q J, where q is the charge of each particle.
Particle currents arise in many contexts. In accelerator physics, beams of charged particles are steered and
The conservation of particle number is expressed by a continuity equation ∂n/∂t + ∇·J = S, where n is the particle