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Alpha decay


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 - PhET


Watch alpha particles escape from a polonium nucleus, causing radioactive alpha decay. See how random decay times relate to the half life.

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 ...

ChemTeam: Writing Alpha and Beta Equations


Alpha Decay. In 1899, Ernest Rutherford wrote the following words: "These experiments show that the uranium radiation is complex and that there are present at ...

Alpha Decay - Boundless


Learn more about alpha decay in the Boundless open textbook.

Radioactivity - HyperPhysics


... kind of radiation. The most common types of radiation are called alpha, beta, and gamma radiation, but there are several other varieties of radioactive decay.

alpha decay | physics | Britannica.com


Alpha decay, type of radioactive disintegration in which some unstable atomic nuclei dissipate excess energy by spontaneously ejecting an alpha particle.

www.ask.com/youtube?q=Alpha Decay&v=CwExbnOzc4o
Dec 22, 2011 ... To see all my Chemistry videos, check out http://socratic.org/chemistry Alpha decay is a type of radioactive (nuclear) decay. Here, I explain what ...

Alpha Decay


During alpha decay the atomic number is reduced by two units and the mass number by four units. For example, alpha decay generates Rn-222 with the atomic ...

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 ...

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Alpha Decay


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 have too large a ...



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 ...

Alpha Decay


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