News tagged with attosecond
Attosecond
An attosecond is an SI unit of time equal to 10−18 of a second. (one quintillionth of a second). For context, an attosecond is to a second what a second is to about 31.71 billion years, or twice the age of the universe.
The word "attosecond" is formed by the prefix atto and the unit second. Atto- was made from the Danish word for eighteen (atten). Its symbol is as.
An attosecond is equal to 1000 zeptoseconds, or 1/1000 of a femtosecond. Because the next higher SI unit for time is the femtosecond (10−15 seconds), durations of 10−17 s and 10−16 s will typically be expressed as tens or hundreds of attoseconds:
For more information about Attosecond, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
Physicists observe electron ejected from atom for first time
Physicists at the University of California, Berkeley in collaboration with researchers from the Max Planck Institute of Quantum Optics and the U.S. Department of Energy's Lawrence Berkeley National Laboratory, became the ...
Oct 12, 2010 |
4.7 / 5 (33) |
7
|
Delayed time zero in photoemission: New record in time measurement accuracy
German physicists have discovered a time delay when using light pulses to emit electrons from atoms. Until now, it has been assumed that the electrons start moving out of the atom immediately after the impact ...
Jun 24, 2010 |
4.9 / 5 (26) |
27
|
Catching electrons in the act: Science on the attosecond scale
(PhysOrg.com) -- Understanding how to create artificial photosynthesis, or tough, flexible high-temperature superconductors, or better solar cells, or a myriad other advances, will only be possible when we ...
Apr 16, 2010 |
5 / 5 (22) |
9
|
Potential 4-D imaging technique modeled by UNL physicists
(PhysOrg.com) -- A long-standing goal of science is to be able to understand how matter behaves at the atomic and subatomic level.
Dec 21, 2010 |
4.7 / 5 (10) |
2
|
Producing isolated laser pulses in attoseconds made easier using two-color laser field
Ultrafast time-resolved laser spectroscopy is a technique that uses the interaction of light with matter to study the properties of physical systems. Researchers can generate laser pulses lasting mere attoseconds ...
Aug 30, 2010 |
5 / 5 (8) |
0
First step taken to image ultra-fast movements in chemical reactions
A team of international researchers have fired ultra-fast shots of light at oxygen, nitrogen and carbon monoxide molecules as part of a development aimed at mapping the astonishingly quick movements of atoms within molecules, ...
Mar 15, 2012 |
5 / 5 (4) |
0
|
Billard game in an atom: Physicists trace the double ionization of argon atoms on attosecond time scales
(Phys.org) -- When an intense laser pulse interacts with an atom it generates agitation on the micro scale. A rather likely outcome of this interaction is single ionization, where one electron is ejected from ...
May 08, 2012 |
5 / 5 (4) |
0
|
K-State's fast laser research and theory building on Einsten's work by timing electrons emissions
Ultrafast laser research at Kansas State University has allowed physicists to build on Nobel Prize-winning work in photo-electronics by none other than Albert Einstein.
May 21, 2009 |
4.8 / 5 (4) |
0
Laser-created temporal lens could lead to movies of molecular processes
(PhysOrg.com) -- Finding a way to observe and record the behavior of matter at the molecular level has long been a holy grail among physicists. That ability could open the door to a wide range of applications ...
Jun 29, 2009 |
5 / 5 (2) |
1
Toward real time observation of electron dynamics in atoms and molecules
Another step has been taken in matter imaging. By using very short flashes of light produced by a technology developed at the national infrastructure Advanced Laser Light Source (ALLS) located at INRS University, researchers ...
Mar 09, 2011 |
5 / 5 (1) |
0
