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Particle physics or high-energy physics is the study of fundamental particles and forces that constitute matter and radiation. The field also studies...

When produced in standard alpha radioactive decay, alpha particles generally have a kinetic energy of about 5 MeV and a velocity in the vicinity of 4% of...

A beta particle, also called beta ray or beta radiation (symbol β), is a high-energy, high-speed electron or positron emitted by the radioactive decay...

A particle accelerator is a machine that uses electromagnetic fields to propel charged particles to very high speeds and energies to contain them in well-defined...

highest kinetic energy for light particles (electrons and positrons) for particle physics. The design of a linac depends on the type of particle that is being...

quantum field theory, the energy that a particle has as a result of changes that it causes in its environment defines self-energy Σ {\displaystyle \Sigma...

The Oh-My-God particle was an ultra-high-energy cosmic ray detected on 15 October 1991 by the Fly's Eye camera in Dugway Proving Ground, Utah, United...

physics, a subatomic particle is a particle smaller than an atom. According to the Standard Model of particle physics, a subatomic particle can be either a...

particle energy and other attributes such as momentum, spin, charge, particle type, in addition to merely registering the presence of the particle. Many...

Wave-particle duality is the concept in quantum mechanics that quantum entities exhibit particle or wave properties according to the experimental circumstances...

particle physics, a calorimeter is a type of detector that measures the energy of particles. Particles enter the calorimeter and initiate a particle shower...

In particle physics, an elementary particle or fundamental particle is a subatomic particle that is not composed of other particles. The Standard Model...

important. The particle may only occupy certain positive energy levels. Likewise, it can never have zero energy, meaning that the particle can never "sit...

Fermi energy is a concept in quantum mechanics usually referring to the energy difference between the highest and lowest occupied single-particle states...

binding energy is the smallest amount of energy required to remove a particle from a system of particles or to disassemble a system of particles into individual...

In these accelerators, particles would cross an accelerating electric field only once. Thus, the energy gained by the particles was limited by the maximum...

lower energy level, photons of various energy will be emitted, ranging from radio waves to gamma rays. Photons can also be emitted when a particle and its...

non-interacting, identical particles that obey the Pauli exclusion principle. A result is the Fermi–Dirac distribution of particles over energy states. It is named...

An electrostatic particle accelerator is a particle accelerator in which charged particles are accelerated to a high energy by a static high voltage potential...

This is a list of known and hypothesized particles. Elementary particles are particles with no measurable internal structure; that is, it is unknown whether...