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 by far the most common form of cluster decay where the parent atom ejects a defined daughter collection of nucleons, leaving another defined product behind ( in nuclear fission, a number of different pairs of daughters of approximately equal size are formed ).

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.

# REDIRECT Alpha decay

Alpha Company managed to survive repeated attacks throughout the day and night, but the cost was heavy.

* January 19 – Lightning strikes Bristow Flight 56C, a Eurocopter Super Puma helicopter, forcing its pilot to autorotate and ditch in heavy seas in the North Sea near the Brae oilfields Brae Alpha oil rig.

The 1st / 7th was typical for U. S. Army units of the time, consisting of three rifle companies ( Alpha through Charlie ) and a heavy weapons company ( Delta ), with about 450 men in total, of the 765 of the battalion's authorized strength.

Specialist Theron Ladner ( with his assistant gunner Private First Class Rodriguez Rivera ) and Specialist 4 Russell Adams ( with a-gunner Specialist 4 Bill Beck ) had positioned their guns apart, and proceeded to pour heavy fire into the Vietnamese forces attempting to cut into the perimeter between Charlie and Alpha companies.

Although it is commonly understood that the Alpha fighters used by the Robotech Expeditionary Force were produced prior to the departure of the Pioneer Mission, the ASC opted to develop its own Veritech mecha which saw heavy use against the forces of the Robotech Masters, including the:

Wheel of the zodiac: This 6th century mosaic pavement in a synagogue incorporates Greek-Byzantine elements, Beit Alpha, Israel.

Alpha process elements ( or alpha elements ) are so-called since their most abundant isotopes are integer multiples of the mass of the helium nucleus ( the alpha particle ).

Alpha elements are Z ≤ 22: ( C, N ), O, Ne, Mg, Si, S, Ar, Ca, Ti.

While the previous games had incorporated elements of speed and survival chance ( a player could build fewer parts and thus launch sooner, although at increased risk of it not making it to Alpha Centauri ), the game is won immediately once the colony ship is launched, the ultimate success of the colony either being assumed or irrelevant.

Covering the same themes as Alpha, the course is cut down to seven weeks with shorter thirty-minute talks with a greater use of multimedia elements.

In addition to Alpha Group, General Karpukhin was also given authority of Vega Group ( Vympel ), elements of the Soviet Airborne, internal security units of the Dzerzhinsky Division ( OMSDON ), mobilized units of the Moscow OMON, three tank companies, and a squadron of helicopters.

The design of the Alero was originally previewed in 1997 with the Alero Alpha concept car, a V6-powered sport coupe that featured many design elements seen in the production Alero as well as some that were never meant for production.

Kryuchkov and Yazov's deputies, KGB general Ageyev and Army general Achalov, respectively, planned the assault, codenamed " Operation Grom " ( Thunder ), which would gather elements of the Alpha Group and Vympel Groups, with the support of the paratroopers, Moscow OMON, the Internal Troops of the Dzerzhinsky division, three tank companies and a helicopter squadron.

At approximately the same time, Alpha and the lead elements of Delta ( which had accompanied Alpha at the perimeter in the vicinity of the creek bed ) were met by a fierce NVA attack.

At 09: 10, the first elements of Alpha Company of the 2nd Battalion of the 7th Cavalry under Captain Joel Sugdinis arrived at X-Ray.

Although WinPad was never released as a consumer product, Alpha builds were released showcasing many interface elements.

The games title is a parody of Super Street Fighter II Turbo ( or Super Street Fighter II X in Japan ), with music and interface elements spoofing the Street Fighter Alpha and Darkstalkers games.

The strip focuses on comedic elements involving Bravoman's powers as well as Alpha Man teaching him how to use his powers.

* Alpha alloys which contain neutral alloying elements ( such as tin ) and / or alpha stabilisers ( such as aluminium or oxygen ) only.

* In Mindstorm's Alpha Omega RPG, the world's populations have retreated into arcology city-states to protect themselves from the war-torn decimation of the Earth's surface

In the Star Trek: Deep Space Nine episode " Past Tense, Part One ", after Earth's history was inadvertently altered so that the Federation was never formed, the Romulans had established a presence in the Alpha Centauri system by the 24th century.

Since Alpha Centauri is the star system closest to Earth, it indicates that, in the altered timeline, the Romulans invaded Earth's stellar region, despite not even being prompted by Earth's role in the encouragement of interplanetary cooperation.

Daneel explains that he had a role in attempting the restoration of Earth's soil and also settling humans at " Alpha ," but achieved less than he had wanted.

The premise of Space: 1999 centres on the plight of the inhabitants of Moonbase Alpha, Earth's Space Research Centre on the Moon, following a scientific cataclysm.

Apart from being the closest star system to Earth's, ( 4. 1 light-years northwest of earth ) Alpha Centauri is home to both a local planning department office of the Galactic Hyperspace Planning Council and a race of small furry creatures ( who, during the times of the Galactic Empire, " were real small furry creatures ").

The first novel points out that it's four light years from Earth's solar system to Alpha Proxima, whilst Damogran is five hundred thousand light years away.

Earth's Alpha site serves as a main site of operation for the Rebel Jaffa and later the Tok ' ra, but the two races have difficulty with trust and collaboration in defeating the Goa ' uld as their enemy.

* 930: Earth's remaining inhabitants are evacuated to ' Alpha '

A similar derisive usage can be seen in the original Star Trek episode " Tomorrow Is Yesterday ", set in 1969, as Captain Kirk, captured by the US Air Force while attempting to steal film showing the Enterprise in Earth's atmosphere, calls himself a " little green man from Alpha Centauri " when interrogated by the base commander.

When Megatron came to suspect this, he strapped Scorponok to a meteor and hurled him at Earth's Energon Grid, hoping to force Alpha Q out of hiding to rescue his minion.

As the battle rages, Kicker arranges to channel all of Earth's Energon into Unicron's head, which Alpha Q then rams into Unicron's body.

His ship, Odysseus I, was not equipped for faster-than-light speed ; hence the journey to Earth's nearest interstellar neighbor, a planet in the Alpha Centauri system, would take about 10 centuries.