What Is the Collision Theory?

Collision theory studies an interaction between particles. The theoretical basis of mechanics is the law of conservation of momentum and the law of conservation of energy. The variety of particles divides collision theory into atom collisions, plasma collisions, and so on. Also belonging to the interaction between particles are: the aggregation of light nuclei, the annihilation of positrons and electrons, the decay of charged mesons, the beta decay of neutrons, the interaction of nucleon N and meson, photon gamma and electron e- The scattering etc.

Have certain

Two light

The discussion of particle interactions generally uses the semi-quantitative method given by Fermi in April 1950 at the Yale University's Shireman lecture "Elementary Particles". Further quantitative processing can refer to the related books on quantum field theory.

Particle interactions include:

(1)

decay

(2) Neutron

decay

There is a horizontal line on it.

(3)

Elastic scattering

According to the model of nuclear force meson theory,

versus

The interaction between mesons has two nucleons and one at a point in space.

The coupling amplitude of the meson is proportional to the amplitude of the three particle wave fields at that point.

(4)

scattering

Photon

And electronics

Scattering is an electromagnetic interaction. Electromagnetic interaction is a basic interaction between photons and charged particles. According to quantum electrodynamics, the basic process of electromagnetic interaction is to couple two charged particles with one photon at a point in space.