The act or process of colliding, → collide.
Verbal noun from → collide .
Of or relating to → collision.
collisional cross section
sekanj-e oskarmand-e hamkubeši
Fr.: section efficace de collision
Same as → cross section.
Fr.: désexcitation collisionnelle
The process when the energy difference between the excited and non excited states of an atom is taken away by an electron during a collision.
Fr.: excitation collisionnelle
A physical process which is caused by the free electrons that are energized either by → photoionization or → collisional ionization. Collisional excitation puts ions, atoms, and molecules into excited states from which they may decay radiatively. Collisional excitation is important in the → interstellar medium.
Fr.: chauffage par collisions
Fr.: ionisation collisionnelle
Fr.: plasma collisionnel
Fr.: amortissement sans collision
Same as the → Landau damping.
Fr.: collision coulombienne
Fr.: collision élastique
A collision between two particles which conserves the total kinetic energy and momentum of the system.
Fr.: collision inélastique
A collision between bodies in which there is a loss of total kinetic energy.
Fr.: plasma non-collisionnel:
A plasma in which the → mean free path of the charged particles between two collisions is much larger than the size of the system containing the plasma.
Fr.: collision radiative
A collision between charged particles in which part of the kinetic energy is converted into electromagnetic radiation.