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  • noun

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one quintillionth (10^-18) of a second

References in periodicals archive ?
Cirelli et al., "Attosecond ionization and tunneling delay time measurements in helium," Science, vol.
"In our experiment we use x-ray flashes to light up core-excitons in solids, whereas the optical attosecond pulses provide the possibility to resolve this motion in real-time," says Julien Bertrand, a former researcher in the group of Goulielmakis, at present assistant professor at Laval University, Canada.
Coherent nuclear dynamics can be followed in this way [15,25-27] because the elastic scattering of fast electrons proceeds on an ultrashort (ultimately attosecond) time scale and represents a nondestructive probing technique.
Corkum, research chair in Attosecond Photonics at the University of Ottawa in Canada, delivered a lecture on "Chasing and steering electrons" at the King Adbul Aziz City For Science and Technology(KACST) in Riyadh on Sunday.
Therefore, there is an urgent need to search for methods to generate even more intense harmonics and attosecond pulses.
attosecond spectroscopy can be used for watching the motion of electrons.
Optical pulses only a few femtosecond long have been used for several years now in high resolution time domain spectroscopy, but a number of processes in the natural world are much faster yet, so attosecond laser pulses have now been developed to investigate them.
Research at the Joint Laboratory for Attosecond Science (JASLab) may lead to scientific breakthroughs in health care, diagnostic medicine, quantum computing, nanotechnology, environmental science and energy.
KOSLOWSKI, Modified Schrodinger equation for attosecond laser pulse interaction with matter.
In addition, studies of the dynamic behavior of nanoparticles require tools with high temporal resolution at femtosecond ([10.sup.-15]s) to attosecond ([10.sup.-18]s) time scales.
The selected awards include a multimodality spectroscope for nanoscale optical imaging the structure of peptides, proteins, and viruses in their native environment; remote nondestructive testing and measurement of power systems for isolating and diagnosing failures in the power grid; and laser instrumentation for attosecond experimentation to probe the fast electron dynamics in electronic devices.
'Opening up the attosecond timescale could therefore provide new insights into the incredibly fast processes of the atomic world.'
Opening up the attosecond timescale could provide new insights into the incredibly fast processes of the atomic world.
The TIA measures amplitudes down to less than 10 attoseconds (1 attosecond is [10.sup.-18] s) of single-cycle PJ for lower-frequency jitter components and less than 75 fs of cumulative PJ amplitude.
The generation of high-energy terahertz pulses is therefore also an important step for the AXSIS (frontiers in Attosecond X-ray Science: Imaging and Spectroscopy) project at CFEL, funded by the European Research Council (ERC), which aims to open up completely new applications with compact terahertz particle accelerators.