A noun is a type of word the meaning of which determines reality. Nouns provide the names for all things: people, objects, sensations, feelings, etc.
WHAT DOES ALPHA PARTICLE MEAN IN ENGLISH?
Alpha particles consist of two protons and two neutrons bound together into a particle identical to a helium nucleus. They are generally produced in the process of alpha decay, but may also be produced in other ways. Alpha particles are named after the first letter in the Greek alphabet, α. The symbol for the alpha particle is α or α2+. Because they are identical to helium nuclei, they are also sometimes written as He2+ or 4 2He2+ indicating a Helium ion with a +2 charge. If the ion gains electrons from its environment, the alpha particle can be written as a normal Helium atom 4 2He. The nomenclature is not well defined, and thus not all high-velocity helium nuclei are considered by all authors as alpha particles. As with beta and gamma rays/particles, the name used for the particle carries some mild connotations about its production process and energy, but these are not rigorously applied. Some science authors may use doubly ionized helium nuclei and alpha particles as interchangeable terms. Thus, alpha particles may be loosely used as a term when referring to stellar helium nuclei reactions, and even when they occur as components of cosmic rays.
The translations of alpha particle from English to other languages presented in this section have been obtained through automatic statistical translation; where the essential translation unit is the word «alpha particle» in English.
List of principal searches undertaken by users to access our English online dictionary and most widely used expressions with the word «alpha particle».
FREQUENCY OF USE OF THE TERM «ALPHA PARTICLE» OVER TIME
The graph expresses the annual evolution of the frequency of use of the word «alpha particle» during the past 500 years. Its implementation is based on analysing how often the term «alpha particle» appears in digitalised printed sources in English between the year 1500 and the present day.
Examples of use in the English literature, quotes and news about alpha particle
10 ENGLISH BOOKS RELATING TO «ALPHA PARTICLE»
Discover the use of alpha particle in the following bibliographical selection. Books relating to alpha particle and brief extracts from same to provide context of its use in English literature.
Matter and Interactions
P.32 An alpha particle (a helium nucleus, containing 2 protons and 2 neutrons)
starts out with kinetic energy of 10 MeV (10 × 106 eV), and heads in the +x
direction straight toward a gold nucleus (containing 79 protons and 118 neutrons
Ruth W. Chabay, Bruce A. Sherwood, 2011
Radioactivity: Introduction and History: Introduction and ...
The nuclei of daughter atoms of alpha-particle-emitting nuclides are often
unstable themselves and may also decay by further alpha-particle emission.
Thus, alpha-particle-emitting nuclides may consist of a mixture of radionuclides,
all part of a ...
Michael F. L'Annunziata, 2007
Magnet power supply for alpha-particle spectrometer II
A current regulated power supply has been built to deliver current, continuously variable from 0 to 600 ma, into a load of 4000 ohms. The system is stable to approximately 1 part in 10,000 over long periods of time.
George F. Schrader, University of California, Berkeley. Radiation Laboratory, 1956
Nuclear Engineering Handbook
Alpha particle Ra-226 Daughter nucleus Np-237 Th-234 Ra-228 Rn-222 4 2 α ++
(Helium nucleus) (4.00147 amu) Parent nucleus Am-241 U-238 Th-232 FiGuRe
19.1 Alpha decay. An alpha particle can also be thought of as a fully ionized ...
Kenneth D. Kok, 2009
According to the principles of the conservation of energy and the conservation of
momentum, this energy is shared between the alpha particle and the recoiling
daughter nucleus — particles that have equal and opposite momenta. The
Joseph A. Angelo, 2004
General, Organic, and Biological Chemistry
11.34 Platinum-192 decays to osmium-188 through alpha particle emission.
Based on the following diagram, in which yellow spheres represent platinum-192
nuclides and red spheres represent osmium-188 nuclides, how many halflives
H. Stephen Stoker, 2012
BiCMOS Technology and Applications
When an alpha particle strikes silicon, it travels and loses energy along a straight
path. The length of travel depends on the energy of the alpha particle. The
energy lost by the incident particle goes to create high energy electron-hole (e-h)
Antonio Alvarez, 1993
Immunoproteins—Advances in Research and Application: 2013 ...
“The detrimental radiolytic effects described above have greatly complicated the
synthesis of .alpha.-particle emitter labeled pharmaceuticals having
therapeutically effective levels of radioactivity. This is especially true in cases
where it is ...
The Particle Odyssey : A Journey to the Heart of the Matter: ...
This makes an exceptionally stable configuration; in fact, it is the nucleus of
helium – the alpha particle. The stability of alpha particles accounts for their
appearance in radioactive decays, particularly of heavy elements such as
uranium and ...
Frank Close, Michael Marten, Christine Sutton, 2002
Field Studies of Radon in Rocks, Soils, and Water
The gross alpha-particle activity generally indicates the total amount of uranium
and 226Ra present in the sample; this was true of ground waters in the Newark
basin. The combined activities of uranium and 226Ra equaled, or nearly equaled
10 NEWS ITEMS WHICH INCLUDE THE TERM «ALPHA PARTICLE»
Find out what the national and international press are talking about and how the term alpha particle is used in the context of the following news items.
Getting the measure of Mars
Sam and Curiosity's alpha particle x-ray spectrometer have found each key element for life – carbon, hydrogen, oxygen, phosphorus and ... «Royal Society of Chemistry, Jul 15»
Mars Exploration Rovers Update: Opportunity Phones Home after …
During solar conjunction, the rover spent most of June using her Alpha Particle X-ray Spectrometer (APXS) gleaning the chemical composition ... «The Planetary Society, Jul 15»
Macomb County student studies nuclear physics at Notre Dame …
... predicting the thickness of foil by its ability to slow alpha particle radiation; and measuring the alloy content of metal using x-ray fluorescence. «The Macomb Daily, Jul 15»
Another city opts to treat water for radionuclides
Which breaks down to 15 pCi/L gross alpha particle and 5 pCi/L combined radium on readings. McCleish said that Bonne Terre isn't the only ... «Daily Journal Online, Jun 15»
Actinium Pharmaceuticals Inc (NYSEMKT:ATNM) Enhances Its …
Actinium Pharmaceuticals Inc (NYSEMKT:ATNM)'s Actimab-A is the most advanced alpha particle immunotherapy currently available. «FinancialsTrend, Jun 15»
U3O8 Corp. discovers large radiometric anomaly that reaffirms …
The radon cup survey identified an area of approximately 90km2 in which the alpha particle concentration is >250 tracks per square millimetre, ... «Stockhouse, Jun 15»
Mars Exploration Rovers Update: Opportunity Tours Spirit of St …
The next sol, the robot field geologist aimed her Alpha Particle X-ray Spectrometer (APXS) to measure atmospheric argon, part of a ... «The Planetary Society, Jun 15»
Uncover the Universe's Mysteries From the Comfort of Home
You're seeing radon, a naturally radioactive element, heave out an alpha particle—two neutrons plus two protons. That's pretty cool, but radon ... «Wired, May 15»
Mars Exploration Rovers Update: Opportunity Logs Sol 4000, Digs …
... of different chosen targets on the outcrops called in the Thessaloniki and Thermopylae with her Alpha Particle X-ray Spectrometer (APXS). «The Planetary Society, May 15»
Actinium Doses the First Patient in the Fourth, Final Cohort of Its …
Actimab-A, Actinium's most advanced alpha particle immunotherapy program is continuing its clinical development in a Phase 1/2 trial for newly ... «Marketwired, Apr 15»
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