Latest Atomic physics Stories

2009-04-23 12:00:10

Scientists say the Rydberg molecule, a molecule that until now existed only in theory, has finally been created, BBC News reported. The molecule is formed through an elusive and extremely weak chemical bond between two atoms. Researchers reported in the journal Nature that the new type of bonding occurs when one of the two atoms in the molecule has an electron very far from its nucleus or center. Nobel prize-winning physicist Enrico Fermi developed fundamental quantum theories about how...

2009-04-10 08:42:31

Ohio State University researchers have developed a new strategy to overcome one of the major obstacles to a grand challenge in physics.What they've discovered could eventually aid high-temperature superconductivity, as well as the development of new high-tech materials.In 2008, the Defense Advanced Research Projects Agency (DARPA) chose three multi-university teams to tackle an ambitious problem: trap atoms inside a light crystal -- also called an "optical lattice" -- that can simulate exotic...

2009-04-08 15:31:27

Physicists at the National Institute of Standards and Technology (NIST) have demonstrated a new ion trap that enables ions to go through an intersection while keeping their cool. Ten million times cooler than in prior similar trips, in fact. The demonstration, described in a forthcoming paper in Physical Review Letters,* is a step toward scaling up trap technology to build a large-scale quantum computer using ions (electrically charged atoms), a potentially powerful machine that could perform...

2009-03-24 08:47:17

Michigan Tech physicists decode hidden properties of the rare EarthsPhysicists at Michigan Technological University have filled in some longtime blank spaces on the periodic table, calculating electron affinities of the lanthanides, a series of 15 elements known as rare earths."Electron affinity" is the amount of energy required to detach an electron from an anion, or negative ion (an atom with an extra electron orbiting around its nucleus). Elements with low electron affinities (like iron)...

2009-02-06 08:48:48

Scientists at the Naval Research Laboratory (NRL) have recently demonstrated the ability to control the spin population of the individual quantum shell states of self-assembled indium arsenide (InAs) quantum dots (QDs). These results are significant in the understanding of QD behavior and scientists' ability to utilize QDs in active devices or for information processing. The scientists, from NRL's Materials Science and Technology Division, used a spin-polarized bias current from an iron (Fe)...

2009-01-14 09:22:10

Physicists at the Joint Quantum Institute (JQI) of the National Institute of Standards and Technology (NIST) and the University of Maryland have proposed a recipe for turning ultracold "boson" atoms"”the ingredients of Bose-Einstein condensates"”into a "supersolid," an exotic state of matter that behaves simultaneously as a solid and a friction-free superfluid. While scientists have found evidence for supersolids in complex liquid helium mixtures, a supersolid formed from such...

2008-12-08 08:55:35

Physicists have taken a significant step toward creation of quantum networks by establishing a new record for the length of time that quantum information can be stored in and retrieved from an ensemble of very cold atoms. Though the information remains usable for just milliseconds, even that short lifetime should be enough to allow transmission of data from one quantum repeater to another on an optical network. The new record "“ 7 milliseconds for rubidium atoms stored in a dipole...

2008-09-21 15:30:00

Scientists at the IBM (NYSE: IBM) Almaden Research Center in San Jose, CA have forged a breakthrough in understanding an intriguing phenomenon in fundamental physics: the Kondo effect. They report their findings today in the scientific journal Nature Physics. The Kondo effect, one of the few examples in physics where many particles collectively behave as one object (a single quantum-mechanical body), has intrigued scientists around the world for decades. Now, using a technique that was...

2008-07-01 16:10:00

Rice experiment yields closest analog yet for classic atomic model Nearly a century after Danish physicist Niels Bohr offered his planet-like model of the hydrogen atom, a Rice University-led team of physicists has created giant, millimeter-sized atoms that resemble it more closely than any other experimental realization yet achieved. The research is available online in Physical Review Letters. Bohr offered the first successful theoretical model of the atom in 1913, suggesting that electrons...

2008-04-30 08:38:36

Researchers at the National Institute of Standards and Technology (NIST) and Max Planck Institute for Physics in Germany believe they can achieve a significant increase in the accuracy of one of the fundamental constants of nature by boosting an electron to an orbit as far as possible from the atomic nucleus that binds it. The experiment, outlined in a new paper, would not only mean more accurate identifications of elements in everything from stars to environmental pollutants but also could...

Latest Atomic physics Reference Libraries

2013-03-16 00:00:00

Niels Henrik David Bohr (October 7, 1885 - November 18, 1962) was a Danish physicist. He made essential contributions to understanding atom structure and quantum mechanics. Born in Copenhagen, Denmark to Christian Bohr and Ellen Adler, Bohr got his doctorate at Copenhagen University in 1911. He then studied under Ernest Rutherford in Manchester, England. Based on Rutherford's theories, Bohr published his Bohr model about atom structure in 1913, introducing the theory of electrons...

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'Cacodemon' comes from a Greek term meaning 'evil genius.'