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Latest Leptons Stories

2012-05-15 13:16:51

A strong laser beam can remove an electron from an atom — a process which takes place almost instantly. At the Vienna University of Technology, this phenomenon could now be studied with a time resolution of less than ten attoseconds (ten billionths of a billionth of a second). Scientists succeeded in watching an atom being ionized and a free electron being "born". These measurements yield valuable information about the electrons in the atom, which up until now hasn't been experimentally...

2012-03-21 14:36:40

The behavior of some of the most elusive particles in the known universe can be simulated using three atoms in a lab, researchers at the Centre for Quantum Technologies (CQT) at the National University of Singapore have found. Principal Investigator Dimitris G. Angelakis and his group members Changsuk Noh and Blas Rodriguez-Lara have devised a scheme that uses the quantum states of three charged ions to simulate the 'oscillations' of neutrinos. The proposal is published in the March issue...

New Experiments Find Neutrinos Did Not Travel Faster Than Light
2012-03-17 04:37:23

Neutrinos that appeared to travel faster than the speed of light during an experiment last year actually travelled at exactly light speed, new research from the European Organization for Nuclear Research (CERN) has revealed. According to CNET reporter Stephen Shankland, the controversy began in September 2011, when the members of a CERN experiment team known as Opera fired neutrinos from the organization's underground particle accelerator near Geneva to the Gran Sasso National Laboratory...

Image 1 - Researchers Send Neutrino Message Through Solid Stone
2012-03-16 03:44:13

For the first time, a team of U.S. researchers have successfully used a beam of neutrinos--extremely low mass particles that can travel at the speed of light--to transmit a message through an obstacle. According to a Wednesday article from Ars Technica reporter Casey Johnston, the scientists, who were representing the University of Rochester and North Carolina State University (NC State), fired the neutrinos through roughly 780 feet of solid bedrock. When the particles emerged on the other...

2012-03-15 16:53:06

A group of scientists led by researchers from the University of Rochester and North Carolina State University have for the first time sent a message using a beam of neutrinos — nearly massless particles that travel at almost the speed of light. The message was sent through 240 meters of stone and said simply, "Neutrino." "Using neutrinos, it would be possible to communicate between any two points on Earth without using satellites or cables," said Dan Stancil, professor of electrical...

Daya Bay Scientists Observe Previously Unseen Neutrino Transformation
2012-03-09 05:38:53

An international team of physicists collaborating on a neutrino experiment that began six years ago released their first results on Thursday, and they report that for the first time they have witnessed an elusive process in which one type of these subatomic particles transforms into another. The findings originate from the Daya Bay Reactor Neutrino Experiment, the first equal collaboration between scientists from the US and China which began in 2006 and has since gained financial,...

2012-03-08 14:51:43

An international particle physics collaboration today announced its first results toward answering a longstanding question — how the elusive particles called neutrinos can appear to vanish as they travel through space. The result from the Daya Bay Reactor Neutrino Experiment [link: http://dayawane.ihep.ac.cn/] describes a critical and previously unmeasured quality of neutrinos — and their antiparticles, antineutrinos — that may underlie basic properties of matter and...

Atoms Caught Moving Within A Molecule
2012-03-08 04:14:32

Using a new ultrafast camera, researchers have recorded the first real-time image of two atoms vibrating in a molecule. Key to the experiment, which appears in this week's issue of the journal Nature, is the researchers' use of the energy of a molecule's own electron as a kind of "flash bulb" to illuminate the molecular motion. The team used ultrafast laser pulses to knock one electron out of its natural orbit in a molecule. The electron then fell back toward the molecule scattered off...

2012-02-29 10:29:42

How long does it take an electron to form a photon? The answer would normally be: so short a time that it cannot be measured. However, the international CERN team responsible for experiment NA63 — mainly staffed by physicists from Aarhus University — has now succeeded in dragging out the process, thereby making it measurable. They achieved this by utilizing the phenomena of objects moving slower and shortening in length from Einstein´s theory of relativity, along with two...

2012-01-31 06:16:25

Sometimes bigger isn't better. Researchers at the U.S. Department of Energy's Savannah River National Laboratory have successfully shown that they can replace useful little particles of monosodium titanate (MST) with even tinier nano-sized particles, making them even more useful for a variety of applications. MST is an ion exchange material used to decontaminate radioactive and industrial wastewater solutions, and has been shown to be an effective way to deliver metals into living cells...


Latest Leptons Reference Libraries

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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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