Αποτελέσματα Αναζήτησης
Symbols representing physical quantities, units, mathematical operations and relationships, astronomical bodies, constellations, and the Greek alphabet.
- Frequently Used Equations
Frequently used equations in physics. Appropriate for...
- Frequently Used Equations
A beta particle, also called beta ray or beta radiation (symbol β), is a high-energy, high-speed electron or positron emitted by the radioactive decay of an atomic nucleus, known as beta decay. There are two forms of beta decay, β − decay and β + decay, which produce electrons and positrons, respectively.
21 Μαΐ 2024 · Beta particles. Gamma radiation. Alpha Particles. An alpha (α) particle is a high-energy helium nucleus. It contains 2 protons and 2 neutrons. It has a mass of 4u and a charge of +2e. Alpha particles are usually emitted from nuclei that are too large. The nuclear notation for an alpha particle is:
Radiation caused by beta particles (high-energy electrons). A beta particle is an electron ejected from a nucleus when a neutron becomes a proton. . A beta particle has a relative mass of...
19 Μαρ 2020 · There are four major types of radiation: alpha, beta, neutrons, and electromagnetic waves such as gamma rays. They differ in mass, energy and how deeply they penetrate people and objects. The first is an alpha particle.
11 Ιουν 2022 · Beta is a moderately penetrating type of radiation. Beta particles have a range of around 20 cm - 3 m in air, depending on their energy. Beta can be stopped by a few millimetres of aluminium foil. Gamma Rays. Gamma (γ) rays are high energy electromagnetic waves. They are emitted by nuclei that need to lose some energy.
When the beta particle moves faster than the speed of light (phase velocity) in the material, it generates a shock wave of electromagnetic radiation known as the Cherenkov radiation. The beta emission has a continuous spectrum. A 1 MeV beta particle can travel approximately 3.5 meters in the air.
