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Electron-positron annihilation occurs when an electron and a positron (the electron's anti-particle) collide. The result of the collision is the conversion of the electron and positron and the creation of gamma ray photons or, less often, other particles.

When a positron and electron collide What particle is produced?

When an electron and positron (antielectron) collide at high energy, they can annihilate to produce charm quarks which then produce D+ and D- mesons.

When a positron meets an electron what is emitted?

In the most common case, two photons are created, each with energy equal to the rest energy of the electron or positron (0.511 MeV). A convenient frame of reference is that in which the system has no net linear momentum before the annihilation; thus, after collision, the photons are emitted in opposite directions.

What happens when electron and proton collide?

When a proton and an electron collide, it's called an electron capture. Electron capture is one of two processes in which a neutron is produced. The other process is a beta decay.

When a positron and an electron collide they produce quizlet?

an electron and a positron collide. gamma photons are produced as a result of the collision.

What happens when a positron collides with a proton?

Protons don't decay (that we can measure). Positrons don't decay (that we can measure). I expect the most likely result is that the positron will bounce off the proton's electric field, emitting a photon. Then the positron will then collide with an nearby electron and annihilate.

How positron is formed?

Positrons are the antiparticles of electrons. The major difference from electrons is their positive charge. Positrons are formed during decay of nuclides that have an excess of protons in their nucleus compared to the number of neutrons. When decaying takes place, these radionuclides emit a positron and a neutrino.

What happen when protons collide?

When protons meet during an LHC collision, they break apart and the quarks and gluons come spilling out. They interact and pull more quarks and gluons out of space, eventually forming a shower of fast-moving hadrons.

What happens when you collide electrons?

When an electron collides with an atom or ion, there is a small probability that the electron kicks out another electron, leaving the ion in the next highest charge state (charge q increased by +1). This is called electron-impact ionization and is the dominant process by which atoms and ions become more highly charged.

What happens to the positron created during the PP chain of nuclear reactions inside the Sun?

The process is called the Proton-Proton (PP) Chain, and it operates inside the Sun and stars of similar mass. So what did we do? 1 positron (this positron will bump into a electron and annihilate, creating a gamma ray – energy!).