Alpha decay is a type of radioactive decay in which an atomic nucleus emits an alpha particle ( two protons and two neutrons ) and thereby transforms ( or ' decays ') into an atom with a mass number 4 less and atomic number 2 less.

Alpha decay is the most likely cluster decay because of the combined extremely high binding energy and relatively small mass of the helium-4 product nucleus ( the alpha particle ).

Alpha decay, like other cluster decays, is fundamentally a quantum tunneling process.

Alpha decay typically occurs in the heaviest nuclides.

Alpha decay can provide a safe power source for radioisotope thermoelectric generators used for space probes and artificial heart pacemakers.

Alpha decay is much more easily shielded against than other forms of radioactive decay.

# REDIRECT Alpha decay

Alpha decay is when a nucleus releases an alpha particle, which is two protons and two neutrons, equivalent to a helium nucleus.

Alpha decay is one example type of radioactivity | radioactive decay, in which an atomic nucleus emits an alpha particle, and thereby transforms ( or ' decays ') into an atom with a mass number 4 less and atomic number 2 less.

Alpha decay occurs when the nucleus ejects an alpha particle ( helium nucleus ).

Alpha particles, protons, and X-rays are emitted during the radioactive decay of unstable atoms.

Alpha particles, produced by the decay of radon and polonium, leave tracks of charge on the silicon wafers when they impact the silicon.

* One recent hypothesis suggests that the lights are formed by a cluster of macroscopic Coulomb crystals in a plasma produced by the ionization of air and dust by Alpha particles during radon decay in the dusty atmosphere.

Alpha decay of heavy elements in the Earth's crust is the source of most naturally occurring helium-4 on Earth.

# REDIRECT Alpha decay

Note that the mass threshold is four times that of 1958 Alpha and that the flux is one fifth as large.

Therefore, N is inversely proportional to the radius cubed and in fair agreement with the inverse 7/2 power derived from 1958 Alpha and 1959 Eta data.

Her husband, who is the son of Alton John Mason of Shreveport, La., and the late Mrs. Henry Cater Parmer, was president of Alpha Tau Omega and a member of Delta Sigma Pi at Lamar Tech, and did graduate work at Rhodes University in Grahamstown, South Africa, on a Rotary Fellowship.

It is similar to the Ancient Greek letter Alpha, from which it derives.

Alpha ( uppercase Α, lowercase α ; Álpha ) is the first letter of the Greek alphabet.

Alpha, both as a symbol and term, is used to refer to or describe a variety of things, including the first or most significant occurrence of something.

Alpha particles have a typical kinetic energy of 5 MeV ( that is, ≈ 0. 13 % of their total energy, i. e. 110 TJ / kg ) and a speed of 15, 000 km / s.

Alpha blending is a convex combination of two colors allowing for transparency effects in computer graphics.

Alpha blending is used in a variety of applications.

Arcturus (; α Boo, α Boötis, Alpha Boötis ) is the brightest star in the constellation Boötes and in fact the northern celestial hemisphere.

With a visual magnitude of − 0. 04, it is the fourth brightest star in the night sky, after − 1. 46 magnitude Sirius, − 0. 86 magnitude Canopus, and − 0. 27 magnitude Alpha Centauri.

However, Alpha Centauri is a bright binary star, whose unresolved components to the naked eye are both fainter than Arcturus.

This makes Arcturus the third brightest individual star, just ahead of Alpha Centauri A ( α Cen A ), whose visual magnitude is − 0. 01.

Antares ( α Scorpii, α Sco, Alpha Scorpii ) is a red supergiant star in the Milky Way galaxy and the sixteenth brightest star in the nighttime sky.

Altair ( Alpha Aquilae, Alpha Aql, α Aquilae, α Aql, Atair ) is the brightest star in the constellation Aquila and the twelfth brightest star in the night sky.

: Alpha testing takes place at developers ' sites, and involves testing of the operational system by internal staff, before it is released to external customers.

) For example, Aldebaran is designated α Tauri ( pronounced Alpha Tauri ), which means " Alpha of the Bull ".

Alpha particles were first described in the investigations of radioactivity by Ernest Rutherford in 1899, and by 1907 they were identified as He < sup > 2 +</ sup > ions.

* Alpha emitters by increasing energy ( Appendix 1 )

Carnegie was honored for his philanthropy and support of the arts by initiation as an honorary member of Phi Mu Alpha Sinfonia Fraternity on October 14, 1917, at the New England Conservatory of Music in Boston, Massachusetts.

Notably, the design team was led by Dirk Meyer, who had worked as a lead engineer on multiple Alpha microprocessors during his employment at DEC. Jerry Sanders had approached many of the engineering staff to work for AMD as DEC wound down their semiconductor business, and brought in a near-complete team of engineering experts.

The game can be won by destroying all other civilizations, reaching the end of the modern era with the highest score, or by winning the space race by reaching the star system of Alpha Centauri.

The 1999 game Sid Meier's Alpha Centauri was also created by Meier and is in the same genre, but with a futuristic / space theme.

Gamers that year had a choice between a new game with the Civilization name but no involvement of Sid Meier ; and a " space "- themed civilization game without the name but clearly designed by the same team ( Sid Meier's Alpha Centauri ).

The dogs ' heads are marked by Alpha and Beta Centauri.

The city is listed by the Globalization and World Cities Research Network ( GaWC ) as a global city, with a ranking of " Alpha -", placing Dublin among the top 30 cities in the world.

Alpha, originally known as Alpha AXP, is a 64-bit reduced instruction set computer ( RISC ) instruction set architecture ( ISA ) developed by Digital Equipment Corporation ( DEC ), designed to replace the 32-bit VAX complex instruction set computer ( CISC ) ISA and its implementations.

Alpha was implemented in microprocessors originally developed and fabricated by DEC.

Internally, Alpha processors were also identified by EV numbers, EV officially standing for " Extended VAX " but having an alternative humorous meaning of " Electric Vlasic ", giving homage to the Electric Pickle experiment at Western Research Lab.

The floating-point control register ( FPCR ) is a 64-bit register defined by the architecture intended for use by Alpha implementations with IEEE 754-compliant floating-point hardware.

Alpha rays ( alpha particles ) and beta rays ( beta particles ) were differentiated by Ernest Rutherford in 1899 through simple experimentation in 1899, but these proved not to be electromagnetic radiation, but rather charged particulate radiation.

Alpha Fornacis is a binary star that can be resolved by small amateur telescopes.

* GW6, Alpha Factor by Kim Eastland ( ISBN 0-88038-294-5 )

While not recording, he frequently hung out and jammed with members of New Jersey – based country rockers Quacky Duck and His Barnyard Friends ( whose members included Tony Bennett's sons, Danny and Dae Bennett as well as future Dylan sideman and member of the Alpha Band, multi-instrumentalist David Mansfield ) and the proto-punk Jonathan Richman & the Modern Lovers, who were being managed by Kaufman.

Most temples of the Alpha et Omega and Stella Matutina closed or went into abeyance by the end of the 1930s, with the exceptions of two Stella Matutina temples: Hermes Temple in Bristol, which operated sporadically until 1970, and the Whare Ra in Havelock North, New Zealand, which operated regularly until its closure in 1978.