Beta minus particle (β-) emission occurs when the ratio of neutrons to protons in the nucleus is too high. An excess neutron transforms into a proton and an electron. The proton stays in the nucleus and the electron is ejected energetically.
How is a beta particle created?
A beta particle forms when a neutron changes into a proton and a high-energy electron . The proton stays in the nucleus but the electron leaves the atom as a beta particle. When a nucleus emits a beta particle, these changes happen: the atomic number increases by 1.
Where does a beta particle come from?
Beta Radiation The beta particle, which may be either negatively charged (negatrons) or positively charged (positrons), originates from the nucleus of an atom. A beta particle is emitted from the nucleus of an atom during radioactive decay. The electron, however, occupies regions outside the nucleus of an atom.
What are characteristics of beta particles?
Beta particles are energetic electrons. They are relatively light and carry a single negative charge. Their mass is equal to the mass of the orbital electrons with which they are interacting. A much larger fraction of its kinetic energy can be lost in a single interaction than the alpha particle.
What does β mean in physics?
In theoretical physics, specifically quantum field theory, a beta function, β(g), encodes the dependence of a coupling parameter, g, on the energy scale, μ, of a given physical process described by quantum field theory.
What is the difference between a beta particle and an electron?
Electrons are subatomic particles that can be found in the electron cloud that surrounds the atomic nucleus. The main difference between beta particle and electron is that beta particle can have either +1 charge or -1 charge whereas electron has a -1 charge.
What are beta particles used for?
Beta particles can be used to treat health conditions such as eye and bone cancer and are also used as tracers. Strontium-90 is the material most commonly used to produce beta particles. Beta particles are also used in quality control to test the thickness of an item, such as paper, coming through a system of rollers.
What is a beta plus particle?
If the nucleus has too few neutrons, a proton will turn into a neutron and emit a fast-moving positron. This positron can be called a beta plus (β+) particle – this process is known as positron emission. A positron is the antimatter version of an electron.
What is a beta particle in chemistry?
Beta particles are high-energy, high-speed electrons or positrons emitted by certain fission fragments or by certain primordial radioactive nuclei such as potassium-40. The beta particles are a form of ionizing radiation also known as beta rays. The production of beta particles is termed beta decay.
What does beta radiation consist of?
Beta radiation consist of free electrons or positrons at relativistic speeds. These particles are known as the beta particles. Beta particles are high-energy, high-speed electrons or positrons emitted by certain fission fragments or by certain primordial radioactive nuclei such as potassium-40.
What happens when a beta particle is removed from the nucleus?
When the beta particle ejection doesn’t rid the nucleus of the extra energy, the nucleus releases the remaining excess energy in the form of a gamma photon. The decay of technetium-99, which has too many neutrons to be stable, is an example of beta decay. A neutron in the nucleus converts to a proton and a beta particle.
What are beta particles used for in quality control?
Beta particles are also used in quality control to test the thickness of an item, such as paper, coming through a system of rollers. Some of the beta radiation is absorbed while passing through the product. If the product is made too thick or thin, a correspondingly different amount of radiation will be absorbed.
