Examples: 1. Positron Emission: An example of a positron emission (β + decay) is shown below. In this example, a neutron of carbon is converted into a proton and the emitted beta particle is an electron. The β- decay of carbon-14. In this case, the mass number of daughter nucleus remains the same, … The type of radioactive decay is usually discernable from studying the products and reactants (the parent nucleus/atom, the daughter nucleus and the emitted or absorbed particles) of the radioactive decay. 2) The order of the nuclides on the right-hand side can be in any order. Notes: The nuclide that decays is the one on the left-hand side of the equation. The nucleus experiences a loss of proton but gains a neutron. If a nucleus emits a beta particle, it loses an electron (or positron). The order of the nuclides on the right-hand side can be in any order. [1] These pairs can then be picked up with the machine and translated by the computer into an image. or antineutrino in the decay.. 2. The muon is a lepton which decays to form an electron or positron.. 1 1 p → 0 1 n + +1 0 e. In positron decay mass number is conserved, however, number of protons decreases by one and number of neutrons increases by one. Examples of beta minus decay include the decay of \(^{14}C\) into \(^{14}N\) and it usually occurs in neutron rich nuclei. - alpha decay - beta decay - positron emission - electron capture. Example of beta decay. Muon. In this case, the process can be represented by: An annihilation occurs, when a low-energy positron collides with a low-energy electron. Beta-Plus Decay: In beta plus decay, the proton disintegrates to yield a neutron causing a decrease in the atomic number of the radioactive sample. When the radioactive molecule undergoes decay, it emits a positron through beta decay. A beta particle is typically a high speed electron in β- decay or positron (an electron with a positive charge) in β+ decay. An example of a positron decay equation: Some points to be made about the equation: 1) The nuclide that decays is the one on the left-hand side of the equation. Positive Beta Decay – Positron Decay. In positron decay, a proton-rich nucleus emits a positron (positrons are antiparticles of electrons, and have the same mass as electrons but positive electric charge), and thereby reduces the nuclear charge by one unit. Alpha decay is a type of radioactive decay in which a particle with two neutrons and two protons is ejected from the nucleus of a radioactive atom. Positron emission or beta plus decay (β + decay) is a subtype of radioactive decay called beta decay, in which a proton inside a radionuclide nucleus is converted into a neutron while releasing a positron and an electron neutrino (ν e). Due to the change in the nucleus a beta particle is emitted. 3) The way it is written above is the usual way. The lifetime of the muon is 2.20 microseconds. 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