Atom does decay. Medical search. Frequent questions

An atom is a particle that consists of a nucleus of protons and neutrons surrounded by an electromagnetically-bound cloud of electrons. (wikipedia.org)
the nucleus of a helium atom, made up of two neutrons and two protons with a charge of +2. (cdc.gov)
the total number of protons and neutrons in the nucleus of an atom. (cdc.gov)
As neutrons travel through matter, they crash with atoms. (cdc.gov)
Free neutrons also decay by this process. (newworldencyclopedia.org)
An unstable atomic nucleus with an excess of neutrons may undergo β − decay. (newworldencyclopedia.org)
The graphic below charts the time it takes for the longest-lived isotope - a form having the same number of protons but a different number of neutrons - of each of the unstable elements to decay. (sciencenews.org)
Drag protons, neutrons, and electrons to construct your own atom! (compadre.org)
As the activity progresses, students build atoms and ions by adding or removing protons, electrons, and neutrons. (compadre.org)
You might not think that to be very much, but depending on the details of how (hypothetical) proton decay works, it could be enough to keep that system stable infinitely into the future, the same way helium-4 is stable even though it contains two neutrons. (scienceblogs.com)
Because although free neutrons decay, bound neutrons can be stable. (scienceblogs.com)
The nuclei of atoms are composed of protons, which have a positive electrical charge, and neutrons, which are electrically neutral. (ieer.org)
The mass of an atom lies almost entirely in its nucleus since protons and neutrons are far heavier than electrons. (ieer.org)
Free neutrons are unstable particles which decay naturally into a proton and electron, with a half-life of about 12 minutes. (ieer.org)
However, it is remarkable that neutrons, when they exist together with protons in the nucleus of atoms, are stable. (ieer.org)
The nominal mass of an atom of an element is measured by the sum of the protons and neutrons in it. (ieer.org)
Alpha decay, which the emission of a helium-4 nucleus containing two protons and two neutrons. (ieer.org)
So in a major cataclysmic event with lots of neutrons tearing around, a neutron slams into the nucleus of an atom. (abc.net.au)
Eventually, once the nucleus is a lot heavier, those extra neutrons do decay into protons, and so this process gives you the heavy atoms such as uranium, platinum, and you guessed it, gold. (abc.net.au)
The atoms in the nucleus are subdivided into neutrons and protons. (databasefootball.com)
Alpha particles are charged particles made up of 2 protons and 2 neutrons-essentially the nucleus of a helium atom. (medscape.com)
Trying to be concise at the same time, it is such that the alpha decays from one superheavy atomic nucleus to its daughter is "simplest" if the number of both protons, Z , and neutrons, N , is even - say 292Lv (116 protons and 176 neutrons). (lu.se)

Unstable atomic nuclei with an excess of protons may undergo β + decay, or inverse beta decay. (newworldencyclopedia.org)
But others have only unstable forms, all of which decay by emitting radiation and transforming into different elements until becoming one that's stable. (sciencenews.org)
The radioactive decay can produce a stable nuclide or will sometimes produce a new unstable radionuclide which may undergo further decay. (wikipedia.org)
Sometimes, the unstable xenon isotopes undergo radioactive decay, releasing two electrons and two neutrinos, changing the xenon atoms into barium atoms. (phys.org)
For instance, radioactive atoms are unstable, eventually breaking down into smaller particles and giving off energy as they do so. (livescience.com)
for HALF of the atoms of the unstable parent to decay to stable daughter. (powershow.com)
Beta particles are high-energy electrons that are emitted from the nuclei of unstable atoms (eg, cesium-137, iodine-131). (msdmanuals.com)

If the atomic nuclei of a chemical element undergo beta decay, this process leads to the transmutation of that element into another. (newworldencyclopedia.org)
It has become apparent, however, that they can be created by bombarding atoms with particles and atomic nuclei. (nobelprize.org)
Many heavy nuclei emit an energetic alpha particle when they decay. (ieer.org)
For such nuclei, it is by far most likely that the alpha-decay occurs between the "ground states" of these two nuclei. (lu.se)
In turn, the excited states in nuclei decay by electromagnetic radiation - gamma rays (one kind of photons) - or by transferring their excitation energy to the surrounding electrons of the superheavy atom. (lu.se)
They collide with the nuclei of stable atoms, resulting in the emission of energetic protons, alpha and beta particles, and gamma radiation. (msdmanuals.com)

Atoms can attach to one or more other atoms by chemical bonds to form chemical compounds such as molecules or crystals. (wikipedia.org)
Each lesson provides guided explorations through simulations and models, featuring 4 themes: motion and energy, charge, atoms/molecules, and light. (compadre.org)
The overarching concept that connects all four is that atoms and molecules are the fundamental basis for all interactions. (compadre.org)
Click and drag atoms to see which ones bond to form diatomic molecules (composed of a pair of the same element. (compadre.org)
Atoms and molecules in electronically excited states decay via various processes which lead to bond breaking and ion formation, producing neutral and charged constituents that react with their neighbors. (lu.se)
Ionizing radiation, which travels as fast as the speed of dioactive materials released from hospitals and from nuclear light, hits atoms and molecules in its path and loses some of its and coal power plants. (cdc.gov)

In beta minus decay, a neutron is converted into a proton , an electron , and an electron antineutrino. (newworldencyclopedia.org)
In beta plus decay, a proton is converted into a neutron, a positron, and an electron neutrino (a type of neutrino associated with the electron). (newworldencyclopedia.org)
The Feynman diagram for beta decay of a neutron into a proton , electron , and electron antineutrino via an intermediate heavy W - boson . (newworldencyclopedia.org)
Beta minus decay is a common process in the neutron-rich fission by-products produced in nuclear reactors, accounting for the large numbers of electron antineutrinos produced by these reactors. (newworldencyclopedia.org)
In a famous letter written in 1930, Wolfgang Pauli suggested that in addition to electrons and protons atoms also contained an extremely light neutral particle which he called the neutron . (newworldencyclopedia.org)
He suggested that this "neutron" was also emitted during beta decay and had simply not yet been observed. (newworldencyclopedia.org)
In 1931, Enrico Fermi renamed Pauli's "neutron" to neutrino, and in 1934 Fermi published a very successful model of beta decay in which neutrinos were produced. (newworldencyclopedia.org)
Beta decay commonly occurs among the neutron-rich fission byproducts produced in nuclear reactors. (newworldencyclopedia.org)
Italian physicist Enrico Fermi devised a theory in 1933 to explain beta decay, which is the process by which a neutron in a nucleus changes into a proton and expels an electron, often called a beta particle in this context. (livescience.com)
He defined a new type of force, the so-called weak interaction, that was responsible for decay, and whose fundamental process was transforming a neutron into a proton, an electron and a neutrino," which was later determined to be an anti-neutrino, wrote Giulio Maltese, an Italian physics historian, in " Particles of Man ," an article published in 2013 in the journal Lettera Matematica. (livescience.com)
The energy balance in the decay of a neutron is achieved by the anti-neutrino, a neutral particle that carries off surplus energy as the neutron decays. (ieer.org)
Potentially, that neutron can decay into a proton, and a few other bits and pieces. (abc.net.au)
But before that neutron has time to decay, another neutron rapidly slams into it -- kind of like high-speed machine-gun fire. (abc.net.au)
The key focus area for our researchers is neutron decay. (nist.gov)
The neutron, which normally resides in an atom's nucleus, decays into an electron, a proton and another particle called an antineutrino when it's removed from the nucleus. (nist.gov)
Neutron decay is an ideal laboratory for looking beyond the Standard Model, due in part to its relative simplicity. (nist.gov)
NIST's prototype (shown here) is still in the testing phase, and the goal is to make large cameras of the TKIDs that can detect signals up to a hundred times weaker than what's possible with the detectors for neutron decay that are available now. (nist.gov)

Radioactive decay is a random process at the level of single atoms: it is impossible to predict when one particular atom will decay. (wikipedia.org)
Their achievement is the first known imaging of single atoms in a solid noble gas. (phys.org)
Both these two things contribute to enabling single atoms to be detected. (lu.se)

When radon or radon progeny undergo radioactive decay, some of the decays expel high-energy alpha particles, · Radon progeny are solid particles that can be which are the main source of health concerns. (cdc.gov)
During those processes, the radionuclide is said to undergo radioactive decay . (wikipedia.org)

Radioactive decay is the process in which a radioactive atom spontaneously gives off radiation in the form of energy or particles to reach a more stable state. (cdc.gov)
In nuclear physics , beta decay is a type of radioactive decay involving the emission of beta particles . (newworldencyclopedia.org)
A particle accelerator is a machine that makes very tiny particles, like protons or small atoms, move very fast. (encyclopedia.com)
These fast moving particles are then made to smash into atoms. (encyclopedia.com)
decays, can attach to dust and other particles and move with the air. (cdc.gov)
The Colorado State University professor of physics studies the fundamental matter particles known as neutrinos, and an exceedingly rare instance of radioactive decay in which neutrinos-otherwise present in such decays-are nowhere to be found. (phys.org)
Many particles in nature decay over time. (livescience.com)
If photons do break down, the results of such decay must be even lighter particles, ones that would travel even faster than photons. (livescience.com)
[1] It should be noted that the emission of gamma rays does not change the mass number or atomic number of the nucleus - that is, unlike radioactive decay by emission of particles, spontaneous fission, or electron capture, it does not cause the transmutation of the nucleus into another element. (ieer.org)
The products of that decay then decayed into further decay products that decayed as well, finally leaving us with all the particles we see today. (bibliotecapleyades.net)
Alpha and beta particles are small, fast-moving bits of over time until all of the radioactive atoms have decayed. (cdc.gov)
These radiation particles and rays carry behaves like other substances, getting into the air, water, soil, enough energy to knock out electrons from atoms and mol- plants, and animals, while also giving off radiation. (cdc.gov)

In nuclear fusion, radioactive decay converts hydrogen into helium and powers the sun. (livescience.com)
This is due to the fusion reaction that powers most stars fusing single hydrogen atoms to create helium atoms. (universetoday.com)
On Earth the majority of helium found comes from radioactive decay. (universetoday.com)
In our Universe, the lightest atoms (hydrogen and helium) were made first. (abc.net.au)

Am-241 is formed spontaneously by the beta decay of plutonium-241. (cdc.gov)
So, Lema tre reasoned, the primeval atom jumped over the problem of Kant's First Antinomy by decaying spontaneously. (bibliotecapleyades.net)

The term derives from the tendency to periodicity of chemical properties deriving from arrangements of electrons in atoms. (ieer.org)
The magnetic properties of materials are also related to the behaviour of electrons in atoms. (britannica.com)

If proton decay exists, then there will be a time when all hydrogen disappears. (scienceblogs.com)
But I want you to be careful about your proton decay assumption. (scienceblogs.com)
In practically all models that admit proton decay (such as Grand Unified Theories), a free proton should eventually decay into a neutral-or-charged pion and either a positron or photons. (scienceblogs.com)
The only thing that makes one element different from another element is the number of protons -- hydrogen atoms all have one proton in the nucleus, all iron atoms have 26 protons, gold atoms have 79 protons and in the superheavyweight category, uranium has 92 protons. (abc.net.au)

A half-life is a measurement of how long it takes for a radioactive isotope to decay. (weegy.com)
In their Nature publication, Fairbank's team describes using a cryogenic probe to freeze the barium "daughter" atom-produced by radioactive decay of the isotope xenon-136-in solid xenon on the end of the probe. (phys.org)

the total number of protons in the nucleus of an atom. (cdc.gov)
The number of electrons in an atom is normally equal to the number of protons in the nucleus. (ieer.org)
An element is just a bunch of atoms that all have the same number of protons in the nucleus. (abc.net.au)

For different atoms different decay constants apply. (enotes.com)
Drag different atoms into the field to build a more complex molecule composed of different elements. (compadre.org)

It is impossible to predict when a particular atom will decay. (enotes.com)

The next 40 years was a period of expanding research on the nature and behavior of atoms, leading to the development of nuclear fission and fusion as energy sources. (usgs.gov)
Nuclear fusion, nuclear decay, and nuclear fission. (databasefootball.com)

For example, uranium-238 ultimately transforms into a stable atom of lead. (cdc.gov)

Dalton concluded that in these oxides, for every tin atom there are one or two oxygen atoms respectively (SnO and SnO2). (wikipedia.org)

Ground-state neutral atoms in optical lattices are one possible system, and they offer good insulation from the environment-- it takes a substantial amount of energy to excite an atom from the ground state, and by definition, they don't have anywhere to decay to, so they can have very long lifetimes. (scienceblogs.com)
More importantly, the interactions between them scale like n to the fourth power, so two atoms in Rydberg states will interact strongly while they're separated by distances so large that neutral atoms wouldn't notice each other at all. (scienceblogs.com)

Atoms are so small that accurately predicting their behavior using classical physics is not possible due to quantum effects. (wikipedia.org)
Colorado State University physics professor Bill Fairbank with his lab's single-atom imaging apparatus. (phys.org)
This theorized but never-before-observed process, called "neutrinoless double-beta decay," would rock the world of particle physics. (phys.org)
The confirmation of such a neutrinoless decay would be historic, requiring updates to the Standard Model of Particle Physics. (phys.org)

They also pose a serious internal radiation threat if beta-emitting atoms are ingested or inhaled . (cdc.gov)
Radioactive atoms give off one or more of these types of radiation to reach a more stable state. (cdc.gov)
[1] These emissions are considered ionizing radiation because they are energetic enough to liberate an electron from another atom. (wikipedia.org)
Some of this residual energy after radioactive decay can be emitted in the form of high-frequency electromagnetic radiation, called gamma rays. (ieer.org)
This model could not explain the instability of the atom, because according to the classical electromagnetic theory, the electron revolving around the nucleus must continuously radiate energy in the form of electromagnetic radiation, and hence, it should fall into the nucleus. (topperlearning.com)
Frequency condition: An atom can emit or absorb radiation in the form of discrete energy photons only when an electron jumps from a higher orbit to a lower orbit or from a lower orbit to a higher orbit. (topperlearning.com)
An overview was provided of management and control of nonionizing radiation, with specific attention given to ultraviolet radiation, lasers, and microwave radiation The atom, radioactivity, and the process of radioactive decay were considered. (cdc.gov)
Exposure to low levels of ionizing radiation from the en- dren are treated with a chemical that has some amount of ra- vironment has not been shown to affect human health. (cdc.gov)

Then 6, then 3, then 1, until eventually, all of the radioactive atoms in that population will reach their more stable state. (cdc.gov)
In theory, only 146 of them are stable, and the other 105 are believed to decay via alpha decay , beta decay , double beta decay , electron capture , or double electron capture . (wikipedia.org)
detection of this decay meant that bismuth was no longer considered stable. (wikipedia.org)
The AMS technique literally extracts and counts the 14C atoms in the sample and at the same time determines the amount of the stable isotopes, 13C and 12C. (genengnews.com)
Lead has the highest atomic number of any stable element and concludes three major decay chains of heavier elements. (wikiversity.org)

A human hair is about a million carbon atoms wide. (wikipedia.org)
1 amu is equal to one twelfth of the mass of a carbon-12 atom. (cdc.gov)
We can now calculate decay constant `lambda` for carbon-14 using the given half-life. (enotes.com)
An ancient bone or artifact often had to be destroyed to be carbon dated using decay counting. (genengnews.com)
As carbon atoms are accelerated through the AMS instrument, they undergo various changes at the atomic level that in the end enables differentiation between high-energy 14C radioisotopes and molecular debris. (genengnews.com)
To describe the geological carbon cycle, you can imagine a carbon atom from being released from a volcano in the form of carbon dioxide. (lu.se)

Since 2005, Fairbank's lab has been part of the international EXO-200 (Enriched Xenon Observatory) scientific collaboration, hunting for neutrinoless double-beta decay using a particle detector filled with super-cold liquid xenon. (phys.org)
Barium tagging could prove a key enabling technology for seeing neutrinoless double-beta decay in a future, upgraded experiment called nEXO. (phys.org)
Crucially, barium tagging would empower scientists to clearly pinpoint single-atom byproducts of double-beta decay by separating real events from background imposter signals. (phys.org)
If the decay produces just two electrons and a barium atom, it signals that a neutrinoless double-beta decay may have occurred. (phys.org)
Finally, if neutrinoless double-beta decay does exist, scientists could use that information to learn why the universe has so much matter, but so little antimatter. (phys.org)
If barium tagging is successfully implemented in a later upgrade of the nEXO detector currently being designed, the detector's sensitivity to neutrinoless double-beta decay could increase by up to a factor of 4. (phys.org)

The electrons of an atom are attracted to the protons in an atomic nucleus by the electromagnetic force. (wikipedia.org)
The main electromagnetic and isospin symmetry breaking corrections to the lowest-order formulas for the energy shift from the Coulomb binding energy and for the decay width are calculated. (epj.org)
The purpose of the present study is to investigate the possibility of weak electromagnetic decay branches along the decay paths of the 6526-keV 10 + isomer in 54 Fe. (lu.se)

If ever there were a makeup palette that could do everything, the Urban Decay Book of Shadows IV would be it. (thebeautyoflifeblog.com)
Zodiac is one of two new limited edition holiday nail polish shades by Urban Decay. (scrangie.com)
I can't even tell you how excited I am that Urban Decay is making nail polish again, let alone full sized bottles. (scrangie.com)
Urban Decay has now done TWO sets of polish. (scrangie.com)
They could do a set- even a mini set if that's what they had to do- of all the good old Urban Decay polish shades. (scrangie.com)
If you're interested in picking these up (or last fall's Apocalyptic kit), Urban Decay is doing their Friends and Family sale right now so you could get them 30% off. (scrangie.com)

A "Rydberg atom" is an atom in a highly excited state, very close to the ionization limit-- technically, it probably ought to be "quantum information with atoms in Rydberg states," but "Rydberg atom" is well established jargon and there's nothing to be done about it now. (scienceblogs.com)
The name comes from the Rydberg formula, which was the first really good description of the emission spectrum of hydrogen, which Niels Bohr eventually showed could be interpreted as describing transitions between discrete electronic states of the atom. (scienceblogs.com)
The Rydberg formula only works well for the low-lying states of hydrogen, because interactions between the electrons in more complicated atoms (i.e., everything else) shift all the energy states. (scienceblogs.com)
Rydberg states in other atoms have quantum numbers of 30 or more, sometimes as high as a couple hundred. (scienceblogs.com)
You do get a lot of possible decay paths, but it turns out that the lifetime of a Rydberg atom increases as you increase the quantum number-- it scales like the quantum number n cubed , so if you go to high Rydberg states, the atoms will stay there a good while. (scienceblogs.com)
We also probe the classical limit of the Fendley-Sengupta-Sachdev model describing Rydberg atom arrays. (arxiv.org)

In addition, the measured half-life of the decay would help scientists indirectly measure the absolute masses of neutrinos-a feat never before accomplished. (phys.org)
In principle, each photon might decay into two of the lightest neutrinos. (livescience.com)

atoms that a radioactive atom gives off when it changes into another substance. (cdc.gov)

It is formed as part of · Radon is normally found at very low levels in three radioactive decay chains that begin with uranium outdoor air. (cdc.gov)
Radium and then higher levels in indoor air in homes, schools, and radon are formed midway through these decay chains. (cdc.gov)
This can include most any mining or milling at various points in these decay chains. (cdc.gov)
There are no questions left [about] whether these decay chains are real or not. (newscientist.com)

Radioactivity and decay laws. (manchester.ac.uk)

The acisabs parameters related to the composition of the hydrocarbon and the rate of decay should be frozen and not modified. (nasa.gov)
the rate of decay of radioactive material expressed as the number of atoms breaking down per second measured in units called becquerels or curies . (cdc.gov)

The atom is the basic particle of the chemical elements, and the chemical elements are distinguished from each other by the number of protons that are in their atoms. (wikipedia.org)
All transfermium elements are made in particle accelerators, or "atom smashers. (encyclopedia.com)
The EXO-200 particle detector is half a mile underground in Carlsbad, New Mexico, and is filled with 370 pounds (about 170 kilograms) of isotopically enriched xenon atoms in liquid form. (phys.org)
Beta decay, which the emission of an electron or a positron (a particle identical to an electron except that it has a positive electrical charge). (ieer.org)
Thus, the decay energy of the alpha particle can to some extent be considered a fingerprint of such a decay. (lu.se)

Most decay quickly but can still be observed astronomically and can play a part in understanding astronomic processes. (wikipedia.org)
In this paper we review the physical processes of Auger emission in nuclear decay and present a new model being developed to evaluate the energy spectrum of Auger electrons, and hence overcome the limitations of existing computations. (epj-conferences.org)

The alpha decay of odd- Z (or odd- N or both odd Z and N ) is most often more complicated. (lu.se)
Therefore, the alpha-decay fingerprint is typically (if not definitely) lost as the alpha-decay energy is not always the same. (lu.se)

Optical cavities, such as the Fabry-Perot cavity, are among other things known for its use in lasers to amplify the stimulated emission from atoms. (lu.se)

If the numbers of protons and electrons are equal, as they normally are, then the atom is electrically neutral. (wikipedia.org)
As a result, atoms of elements are normally electrically neutral. (ieer.org)
The atom is surrounded by a suitable number of electrons so that their total negative charge is equal to the total positive charge on the nucleus and the atom as a whole is electrically neutral. (topperlearning.com)
Ionization occurs when sufficient energy is transferred to an atom to liberate an orbital electron generating an electrically charge ion pair. (medscape.com)

This is the opposite nuclear reaction called fission that splits atoms. (universetoday.com)

However, when the cavity is made sufficiently small and highly reflective, the theory of quantum electrodynamics (QED) describes how the cavity can also amplify the spontaneous emission of atoms. (lu.se)
Such a small cavity with highly reflective mirrors alters the density of allowed vacuum states, which in turn causes changes to the spontaneous decay. (lu.se)

The proposed mechanism offers a time oscillating decay with the frequency up to 0.1 Hz. (arxiv.org)
Half-life is the length of time it takes for half of the radioactive atoms of a specific radionuclide to decay. (cdc.gov)
The timescale of radioactive decay is known as an element's half-life, the time it takes for a sample of an element to be reduced by half. (sciencenews.org)
The range of the half-lives of radioactive atoms has no known limits and spans a time range of over 55 orders of magnitude. (wikipedia.org)
However, it is equally likely to decay at any instant in time. (enotes.com)
Therefore, given a sample of a particular radioisotope, the number of decay events `−dN` expected to occur in a small interval of time `dt` is proportional to the number of atoms present `N,` i.e. (enotes.com)
where `N_0` is the number of undecayed atoms at time `t=0. (enotes.com)
By determining the number of 14C decays that take place in a certain time, one can calculate the number of 14C atoms in the sample. (genengnews.com)
Now last time, we went back to the beginning of the Universe to try to work out where the atoms of gold in your jewellery really come from. (abc.net.au)
Lema tre knew that quantum mechanics had already shown radioactive atoms can decay at any time without an actual cause. (bibliotecapleyades.net)

If it is a noble gas, the atoms would not interact with gold. (newscientist.com)

The decay of silver and hafnium atoms with a vacancy in the K shell by the emission of photon pairs which continuously share the transition energy was studied. (unizg.hr)

The W - boson subsequently decays into an electron and an antineutrino. (newworldencyclopedia.org)

All of the heavier elements are radioactive and quickly decay. (nobelprize.org)

1992) 'Two-photon decay in silver and hafnium atoms', Physical Review A , 46(1), pp. 132-141. (unizg.hr)
The differential transition probabilities of 2s→1s, 3s→1s, 3d→1s, and 4sd→1s two-photon decay per decay of a K-shell vacancy have been determined. (unizg.hr)
The 3d→1s two-photon decays show the resonance effect, in accordance with the theoretical predictions. (unizg.hr)
Following upon this, the atoms de-excite by sending out X-rays (also a kind of photon, but from the atom). (lu.se)
Thus, if the atom is in a superposition on a transition in resonance with the cavity, an incoming photon will be put into a superposition of being reflected and not. (lu.se)
This allows a single-atom single-photon switch to be built, that can distribute entanglement over large distances as a node in a quantum network. (lu.se)

you are thorium decays or transforms about a dozen times, each exposed to them primarily by breathing them in. (cdc.gov)

And so researchers keep smashing atoms together , hoping to paddle closer to the island's fabled shore. (sciencenews.org)
Like sifting through piles of identical-looking marbles, distinguishing between the real decay and similar-appearing background events has been a central problem for the researchers. (phys.org)
In 1999, researchers at the Joint Institute for Nuclear Research in Dubna, Russia, claimed to have made atoms of element 114, but no confirmation was available. (newscientist.com)
Like the Dubna group, both sets of researchers fired calcium atoms containing 20 protons each at a target of plutonium atoms, which contain 94 protons each. (newscientist.com)

So either way, gamma-ray decay of the nucleus or X-ray decay of the atom, one needs to measure these photons to be able to "fingerprint" again. (lu.se)

When alpha-emitting atoms are inhaled or swallowed, however, they are especially damaging because they transfer relatively large amounts of ionizing energy to living cells. (cdc.gov)
The energy and the decay width of the πK atom are evaluated in the framework of the quasipotential-constraint theory approach. (epj.org)
This was in apparent contradiction to the law of conservation of energy, as it appeared that energy was lost in the beta decay process. (newworldencyclopedia.org)
So far, the EXO-200 detector has produced decay events of the correct energy, but no definitive excess over what's expected from the measured detector background. (phys.org)
In his description, all matter and energy were initially in the form of a giant cosmic atom. (bibliotecapleyades.net)

This model accounts for the decay in the ACIS quantum efficiency most likely caused by molecular contamination of the ACIS filters. (nasa.gov)
You can set up situations where you can entangle the states of neighboring atoms, but this tends to be slow, and the atoms involved are generally very close together, which makes it difficult to address them individually, which is another key element of a quantum computer. (scienceblogs.com)

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