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Latest Neutrino Stories

2012-06-21 23:37:27

Key experiment in nuclear physics Stable tin, as we know it, comprises 112 nuclear particles — 50 protons and 632 neutrons. The neutrons act as a kind of buffer between the electrically repelling protons and prevent normal tin from decaying. According to the shell model of nuclear physics, 50 is a "magic number" that gives rise to special properties. Tin-100, with 50 protons and 50 neutrons, is "doubly magic," making it particularly interesting for nuclear physicists. Shooting...

CERN Confirms Neutrinos Not Faster Than Light
2012-06-11 06:29:34

Einstein´s Theory Of Relativity Preserved Physicists working at the European Center for Nuclear Research (CERN) in Switzerland on Friday concluded once and for all that neutrinos are definitely not faster than the speed of light, preserving Einstein´s Theory of Special Relativity that was challenged by earlier experiments. The challenge was first made last year when researchers published results of an experiment that seemed to indicate that neutrinos were moving about 3.7...

Physicists Make Closest Measurement Of Neutrinoless Double-Beta Decay Yet
2012-06-05 03:43:51

Physicists searching for a hypothetical and rare process involving radioactive decay of atomic nuclei have gotten their most sensitive results to date, suggesting that these mysterious particles behave like other elementary particles at the quantum level. If such a discovery can be made, the researchers said the process could have profound implications for how scientists understand the fundamental laws of physics and could help solve some of the biggest mysteries of the universe. The...

Scientists Weed Out 15-Year-Old Theory On Cosmic Rays
2012-04-19 04:27:13

Researchers using the IceCube Neutrino Observatory have taken the first steps to determine how the highest energy cosmic rays are produced. Francis Halzen, the IceCube principal investigator, said that although they haven't discovered where cosmic rays have come from, they have made a big leap forward in ruling out one of the leading predictions. The researchers wrote in a paper published in the journal Nature that they searched for neutrinos emitted from 300 gamma ray bursts between...

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2012-03-30 12:32:30

The Italian professor who claimed particles were moving faster than the speed of light has resigned after his finding was overturned. Italy's National Institute of Nuclear Physics (INFN) said Antonio Ereditato has stepped down as coordinator of the OPERA experiment. The experiment was measuring the speed at which sub-atomic particles called neutrinos travelled from the CERN research center in Geneva to Gran Sasso in central Italy. At first, the researchers believe the particles had...

Faulty Wire To Blame For OPERA’s Speed Of Light Experiment Results
2012-02-23 10:14:01

A claim by scientists working at CERN that neutrinos had traveled faster than light in a September experiment has been proved untrue, after further investigation led them to find a faulty wire connection between a timer and a computer. The US journal Science reported on Wednesday that the 60-nanosecond discrepancy that led physicists to believe neutrinos were traveling faster than the speed of light was in fact the conclusion of a bad connection in a fiber optic cable connecting a GPS...

Neutrino-Detecting Telescope Receives Priority EU Funding
2012-01-23 12:35:23

A $300-plus million dollar deep sea observatory which will detect high-energy particles bombarding the Earth from outer space has just received priority funding from the European Union (EU), according to a report by Telegraph Science Correspondent Richard Gray. According to Gray, scientists are hoping that the £210 million ($326 million) Multi-Cubic Kilometre Neutrino Telescope (KM3NeT) will be able to observe trace materials left behind by neutrinos as they pass through our planet....

New Tests Confirm Neutrinos Are Still Faster Than Light
2011-11-18 12:36:05

Scientists who believed to have found in September that certain neutrinos travel faster than light have ruled out a potential source of error in their measurements after completing a second round of tests, further fracturing Einstein´s theory of relativity. The team´s results, posted on the ArXiv preprint server this morning, confirmed their earlier measurements that neutrinos, sent through the ground from CERN -- on the Swiss-French border -- to the Gran Sasso lab in Italy 450...

Scientists To Revisit Speed Of Light Neutrino Experiment
2011-10-28 11:37:16

The scientists who reported about particles that moved faster than light said on Friday that they were going to revisit their experiment. The scientists said that they began a new test earlier this week because critics of the experiment say the results were "a statistical quirk," according to the AFP news agency. The team said on September 23 that they measured neutrinos that traveled about 3.75 miles per second faster than the velocity of light, breaking Einstein's claim of light being...

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2011-07-18 05:45:00

The radioactive decay of uranium, thorium, and potassium contained in the Earth's crust provides nearly half of the planet's internal heat, claim the authors of a new study that has been published in Nature Geoscience and currently available at the journal's website. "The Earth has cooled since its formation, yet the decay of radiogenic isotopes...in the planet's interior provides a continuing heat source," the international team of American, Japanese, and Dutch researchers behind the project...


Latest Neutrino Reference Libraries

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2009-05-14 17:51:56

The IceCube Neutrino Observatory is a neutrino telescope that is currently being built at the Amundsen-Scott South Pole Station. IceCube is being constructed in deep Antarctic ice by deploying thousands of PMTs (photomultiplier tubes) at depths of 4750 to 8000 feet. These spherical optical sensors are deployed on strings of sixty modules each, into holes melted by hot water drilling. Since 2005, 59 strings have been deployed and installation is expected to be complete by 2011. The strings are...

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2004-10-19 04:45:44

WIMP -- In astronomy, WIMPs, or weakly interacting massive particles, figure into one explanation of the dark matter problem. The particles are called "weakly interacting" because they seem not to have much interaction with normal matter (electrons, protons, and neutrons) other than gravitational attraction (thus "massive"). Assuming that there are Weakly Interacting Massive Particles, these particles would then fall out of equilibrium with the universe when they are non-relativistic....

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2004-10-19 04:45:41

Solar Radiation -- Solar radiation is radiant energy emitted by the sun due to nuclear fusion reactions. Fusion is the process whereby stars produce huge quantities of energy from the fusion of hydrogen or helium, in one of the most efficient processes of energy generation. The radiation referred to is usually electromagnetic energy, particularly infrared radiation, visible light, and ultraviolet. Some stars are known to emit radiation of other wavelengths. Solar neutrinos are a...

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2004-10-19 04:45:40

Supernova 1987a -- Supernova 1987a was a supernova in the Large Magellanic Cloud, a nearby dwarf galaxy. It occurred approximately 50 kiloparsecs from Earth, the closest supernova since Supernova 1604, which occurred in the Milky Way itself. The light from the supernova reached Earth on February 23, 1987. Its brightness peaked in May with a magnitude of about 3 and slowly declined in the following months. It was modern astronomers' first opportunity to see a supernova up close....

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2004-10-19 04:45:40

Sudbury Neutrino Observatory -- The Sudbury Neutrino Observatory (SNO) is taking data that has provided revolutionary insight into the properties of neutrinos and the core of the sun. The detector, shown in the artist's conception below, was built 6800 feet under ground, in INCO's Creighton mine near Sudbury, Ontario. SNO is a heavy-water Cherenkov detector that is designed to detect neutrinos produced by fusion reactions in the sun. It uses 1000 tonnes of heavy water, on loan from...

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