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The lifetime of the muon is 2.20 microseconds. The nucleus experiences a loss of proton but gains a neutron. Examples: 1. Positron decay is conversion of one proton to one neutron. 2. In this case, the process can be represented by: An annihilation occurs, when a low-energy positron collides with a low-energy electron. 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. Positive Beta Decay – Positron Decay. Example of beta decay. 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). or antineutrino in the decay.. Positron emiss ion (\(β^+\) decay) is the emission of a positron from the nucleus. In this case, the mass number of daughter nucleus remains the same, … 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. Positron Emission: An example of a positron emission (β + decay) is shown below. 3) The way it is written above is the usual way. The β- decay of carbon-14. The fact that the above decay is a three-particle decay is an example of the conservation of lepton number; there must be one electron neutrino and one muon neutrino. Examples of beta minus decay include the decay of \(^{14}C\) into \(^{14}N\) and it usually occurs in neutron rich nuclei. The general way of representing a positron emission is as above. That positron is then very quickly annihilated by an electron, and this will emit two gamma rays that move in approximately opposite directions. - alpha decay - beta decay - positron emission - electron capture. 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. If a nucleus emits a beta particle, it loses an electron (or positron). 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. 2) The order of the nuclides on the right-hand side can be in any order. The order of the nuclides on the right-hand side can be in any order. The muon is a lepton which decays to form an electron or positron.. 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. In this example, a neutron of carbon is converted into a proton and the emitted beta particle is an electron. 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. Notes: The nuclide that decays is the one on the left-hand side of the equation. 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. Uranium and thorium are examples of alpha decay. Solution. Muon. Due to the change in the nucleus a beta particle is emitted. [1] These pairs can then be picked up with the machine and translated by the computer into an image. This example, a neutron opposite directions that move in approximately opposite directions an annihilation occurs when... It loses an electron or positron ) move in approximately opposite directions general way of representing a positron the. 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