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Alpha decay - Wikipedia, the free encyclopedia

https://en.wikipedia.org/wiki/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' into an ...

Alpha Decay - Alpha Decay, Alpha Particles, Radioactivity ...

phet.colorado.edu/en/simulation/alpha-decay

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 - Jefferson Lab

education.jlab.org/glossary/alphadecay.html

Alpha Decay. 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

www.chemteam.info/Radioactivity/Writing-Alpha-Beta.html

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 least ...

Alpha particle - Wikipedia, the free encyclopedia

https://en.wikipedia.org/wiki/Alpha_particle

The best-known source of alpha particles is alpha decay of heavier (> 106 u atomic weight) atoms. When an atom emits an alpha particle in alpha decay, the atom's mass ...

Alpha Decay - Lawrence Berkeley National Laboratory

www2.lbl.gov/abc/wallchart/chapters/03/1.html

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 proton to ...

Alpha Decay Definition - Physics@TutorVista.com

physics.tutorvista.com/modern-physics/alpha-decay.html

Alpha decay is the phenomenon of emission of an alpha particle from a radioactive nucleus. When a nucleus emits an alpha particle then its mass number decreases by 4 ...

Alpha decay - New World Encyclopedia

www.newworldencyclopedia.org/entry/Alpha_decay

Alpha decay is a type of radioactive decay in which an atomic nucleus emits an alpha particle. An alpha particle (or α particle, named after the first letter of the ...

Alpha-decay | Define Alpha-decay at Dictionary.com

dictionary.reference.com/browse/alpha-decay

alpha decay The radioactive decay of an atomic nucleus by emission of an alpha particle (two protons bound to two neutrons). When an element undergoes alpha decay ...

alpha decay | physics | Britannica.com

www.britannica.com/science/alpha-decay

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