![]() This is explained by the energy-mass equivalence, E = m c2. Since a photon has no mass, it is considered that pair production is an example of creating matter from pure energy. A positron has the same mass as an electron but has a positive charge. In the pair production process, the photon disappears. In pair production, a photon creates an electron and a positron. Where, f – frequency of the radiation (Hz) The energy (E) carried in each quantum is given by the following equation: A photon is the special name given to a quantum of energy when the energy is in the form of electromagnetic radiation. The properties of neutrinos and antineutrinos are presented in the following table:Īccording to a theory developed by Albert Einstein, light radiation consists of a stream of energy packets called photons. They are distinguished from neutrinos by having opposite signs of the Lepton number. Like the neutrino, an antineutrino also has no electric charge and half-integer spin. For each neutrino, there also exists a corresponding antiparticle, called an antineutrino. The properties of a neutron and antineutron are presented in the following table:Īn antineutrino is a subatomic particle. This is because the antineutron is composed of antiquarks, while neutrons are composed of quarks. It has the same mass as the neutron, and no net electric charge, but has an opposite Baryon number (+1 for neutron, −1 for the antineutron). Properties of a proton and antiproton are presented in the following table:Īn antineutron is a subatomic particle. Antiprotons have the same mass as a proton, but have a negative electric charge and oppositely directed magnetic moment. Properties of the electron and positron are presented in the following table:Īn antiproton is a subatomic particle. ![]() Figure 1 shows some of the particles and their antiparticles.Ī positron, also called a positive electron, is a positively-charged subatomic particle having the same mass and magnitude of charge as the electron. ![]() Every subatomic particle has a corresponding antiparticle. In this article, the properties of particles and their antiparticles are explained.Īntiparticle can be defined as a subatomic particle having the same mass as a given particle but opposite electric or magnetic properties. ![]() If an electron encounters a positron, they annihilate with the transformation of their mass-energies into two gamma rays. A positron has identical mass, but has a positive charge. For example, the positron is the antiparticle of the electron. Every particle has an antiparticle, according to the standard model for describing fundamental particles and interactions. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |