Conveners
4.3 Radiation Physics & X-ray Lasers and 4.5 Laser Produced Plasmas
- Remington Reid (US AFRL)
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Dr Dirk van den Bekerom (The Ohio State University)27/06/2019, 13:304.5 Laser Produced PlasmasOral
Achieving higher fuel efficiency and reducing NO$_x$ emissions from internal combustion engines and gas turbine requires operation at lower equivalence ratios, when ignition and flameholding may become unstable. A similar problem occurs during ignition of supersonic flows, when ignition delay time may become comparable with the flow residence time and fuel-air mixing time in the combustor....
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Jan-Patrick Schwinkendorf (European XFEL GmbH)27/06/2019, 14:004.3 Radiation Physics & X-ray LasersOral
The European XFEL is a superconducting, radio-frequency free-electron laser simultaneously operating three variable-gap undulator SASE beamlines. Each beamline supplies two instruments with X-rays of up to 25 keV photon energy. One of them, the High Energy Density (HED) scientific instrument, will be a unique platform to generate and investigate matter under extreme conditions of pressure,...
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Mario Favre (Instituto de Física, Pontificia Universidad Católica de Chile)27/06/2019, 14:154.5 Laser Produced PlasmasOral
We have been studying the dynamics and overall features of laser produced annular plasma expanding in background gases. The initial plasma is produced by focusing a Nd:YAG laser beam (1064 nm, 3.5 ns FWHM, $\sim10^{10}$W/cm$^2$) onto a flat target employing a combination of a 10 mrad axicon prism and a converging lens, which results in an initial ring-like shape plasma of 1 mm radius and...
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Mr ZHAO WANG (China Institute of Atomic Energy)27/06/2019, 14:304.5 Laser Produced PlasmasInvited
The HEAVEN-I KrF excimer laser facility is the Chinese largest krypton fluoride laser facility, housed at the China Institute of Atomic Energy, Beijing, China. There were 6 laser beams at this facility, combined energy up to 100 J with a pulse width of 28 ns at a wavelength of 248 nm. The uniformity distribution of laser intensity is less than 2\%. The diameter of the focal spots was about...
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Prof. Alla Safronova (University of Nevada, Reno)27/06/2019, 15:004.3 Radiation Physics & X-ray LasersOral
Recently, hard x-ray characteristic lines from high Z materials produced from pulsed power plasmas have been studied: as signatures of hot electrons using Mo K-alpha emission from Mo nested wire arrays on SNL-Z [1], Cu and Zn K-alpha emission from brass planar wire arrays on UNR’s Zebra generator [2], and as a new hard x-ray spectroscopic diagnostic for the direct measurement of the ionization...
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