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Alpha decay - Wikipedia


Alpha decay or α-decay is a type of radioactive decay in which an atomic nucleus emits an alpha particle (helium nucleus) and thereby transforms or 'decays' ...



Alpha decay is a radioactive process in which a particle with two neutrons and two protons is ejected from the nucleus of a radioactive atom. The particle is ...

Glossary Term - Alpha Decay - Science Education at Jefferson Lab


Alpha decay is one process that unstable atoms can use to become more stable. During alpha decay, an atom's nucleus sheds two protons and two neutrons in ...

Alpha decay | Define Alpha decay at Dictionary.com


Alpha decay definition, a radioactive process in which an alpha particle is emitted from the nucleus of an atom, decreasing its atomic number by two. See more.

Alpha Decay


Aug 9, 2000 ... In alpha decay, shown in Fig. 3-3, the nucleus emits a 4He nucleus, an alpha particle. Alpha decay occurs most often in massive nuclei that ...

Alpha Decay - ChemTeacher


Smoke detectors work by alpha decay. Americium-241 is inside smoke detectors, and when smoke particles enter the detector the alpha particles released by ...

Types of Radioactive Decay - Boise State University

edtech2.boisestate.edu/lindabennett1/502/nuclear chemistry/types of decay.html

There are three main types of radioactive decay: alpha, beta, and gamma. Let's pause here a minute to define "decay." When an element decays the parent ...

Radioactive decay - Wikipedia


Radioactive decay is the process by which the nucleus of an unstable atom loses energy by emitting radiation, including alpha particles, beta particles, gamma ...

The Process of Natural Radioactive Decay - dummies


As an alpha particle breaks away from the nucleus of a radioactive atom, ... Here, Radon-222 undergoes nuclear decay with the release of an alpha particle.