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