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Soft X Ray Thomson Scattering In Warm Dense Hydrogen At Flash
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Book Synopsis Soft X-Ray Thomson Scattering in Warm Dense Hydrogen at FLASH. by :
Download or read book Soft X-Ray Thomson Scattering in Warm Dense Hydrogen at FLASH. written by and published by . This book was released on 2009 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present collective Thomson scattering with soft x-ray free electron laser radiation as a method to track the evolution of warm dense matter plasmas with ≈200 fs time resolution. In a pump-probe scheme an 800 nm laser heats a 20 [mu]m hydrogen droplet to the plasma state. After a variable time delay in the order of ps the plasma is probed by an x-ray ultra violet (XUV) pulse which scatters from the target and is recorded spectrally. Alternatively, in a self-Thomson scattering experiment, a single XUV pulse heats the target while a portion of its photons are being scattered probing the target. From such inelastic x-ray scattering spectra free electron temperature and density can be inferred giving insight on relaxation time scales in plasmas as well as the equation of state. We prove the feasibility of this method in the XUV range utilizing the free electron laser facility in Hamburg, FLASH. We recorded Thomson scattering spectra for hydrogen plasma, both in the self-scattering and in the pump-probe mode using optical laser heating.
Book Synopsis Simulations of X-ray Thomson Scattering from Warm Dense Matter by : Ghulam Shabbir Naz
Download or read book Simulations of X-ray Thomson Scattering from Warm Dense Matter written by Ghulam Shabbir Naz and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Theory of X-ray Thomson Scattering in Warm Dense Matter by : Kathrin Wünsch
Download or read book Theory of X-ray Thomson Scattering in Warm Dense Matter written by Kathrin Wünsch and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis X-ray Sources for X-ray Thomson Scattering of Warm Dense Matter on the Z-Accelerator by :
Download or read book X-ray Sources for X-ray Thomson Scattering of Warm Dense Matter on the Z-Accelerator written by and published by . This book was released on 2012 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Simulations of X-ray Thomson Scattering From Warm Dense Matter by : G. S. N. Naz
Download or read book Simulations of X-ray Thomson Scattering From Warm Dense Matter written by G. S. N. Naz and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modeling X-ray Thomson Scattering Spectra of Warm Dense Matter by :
Download or read book Modeling X-ray Thomson Scattering Spectra of Warm Dense Matter written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis X-ray Thomson Scattering of Warm Dense Matter on the Z-accelerator by :
Download or read book X-ray Thomson Scattering of Warm Dense Matter on the Z-accelerator written by and published by . This book was released on 2013 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis X-ray Thomson Scattering of Warm Dense Matter on Z-accelerator by :
Download or read book X-ray Thomson Scattering of Warm Dense Matter on Z-accelerator written by and published by . This book was released on 2011 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis X-ray Thomson Scattering Measurements of Warm Dense Matter by :
Download or read book X-ray Thomson Scattering Measurements of Warm Dense Matter written by and published by . This book was released on 2012 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Progress in X-ray Thomson Scattering of Warm Dense Matter on Z-Accelerator by :
Download or read book Progress in X-ray Thomson Scattering of Warm Dense Matter on Z-Accelerator written by and published by . This book was released on 2011 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Using Collective X-ray Thomson Scattering to Measure Temperature and Density of Warm Dense Matter by :
Download or read book Using Collective X-ray Thomson Scattering to Measure Temperature and Density of Warm Dense Matter written by and published by . This book was released on 2009 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Collective x-ray Thomson scattering allows measuring plasmons, i.e electron plasma oscillations (Langmuir waves). This is manifest in the appearance of spectrally up- and down-shifted spectral features in addition to the Rayleigh signal. The ratio of the up- and down-shifted signals is directly related to detailed balance, allowing to determine the plasma temperature from first principles. The spectral shift of the plasmon signals is sensitive to temperature and electron density. We discuss the experimental considerations that have to be fulfilled to observe plasmon signals with x-ray Thomson scattering. As an example, we describe an experiment that used the Cl Ly-[alpha] x-ray line at 2.96 keV to measure collective Thomson scattering from solid beryllium, isochorically heated to 18 eV. Since temperature measurement based on detailed balance is based on first principles, this method is important to validate models that, for example, calculate the static ion-ion structure factor S{sub ii}(k).
Book Synopsis Thomson Scattering from Near-solid Density Plasmas Using Soft X-ray Free Electron Lasers by :
Download or read book Thomson Scattering from Near-solid Density Plasmas Using Soft X-ray Free Electron Lasers written by and published by . This book was released on 2006 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: We propose a collective Thomson scattering experiment at the VUV free electron laser facility at DESY (FLASH) which aims to diagnose warm dense matter at near-solid density. The plasma region of interest marks the transition from an ideal plasma to a correlated and degenerate many-particle system and is of current interest, e.g. in ICF experiments or laboratory astrophysics. Plasma diagnostic of such plasmas is a longstanding issue. The collective electron plasma mode (plasmon) is revealed in a pump-probe scattering experiment using the high-brilliant radiation to probe the plasma. The distinctive scattering features allow to infer basic plasma properties. For plasmas in thermal equilibrium the electron density and temperature is determined from scattering off the plasmon mode.
Book Synopsis Potential and Progress in X-ray Thomson Scattering of Warm Dense Matter on the Z-Accelerator by :
Download or read book Potential and Progress in X-ray Thomson Scattering of Warm Dense Matter on the Z-Accelerator written by and published by . This book was released on 2011 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Resonant Bound-Free Contributions to Thomson Scattering of X-rays by Warm Dense Matter by :
Download or read book Resonant Bound-Free Contributions to Thomson Scattering of X-rays by Warm Dense Matter written by and published by . This book was released on 2013 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thomson Scattering at FLASH - Status Report by :
Download or read book Thomson Scattering at FLASH - Status Report written by and published by . This book was released on 2007 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: The basic idea is to implement Thomson scattering with free electron laser (FEL) radiation at near-solid density plasmas as a diagnostic method which allows the determination of plasma temperatures and densities in the warm dense matter (WDM) regime (free electron density of n{sub e} = 1021-1026 cm−3 with temperatures of several eV). The WDM regime [1] at near-solid density (n{sub e} = 1021-1022 cm−3) is of special interest because, it is where the transition from an ideal plasma to a degenerate, strongly coupled plasma occurs. A systematic understanding of this largely unknown WDM domain is crucial for the modeling and understanding of contemporary plasma experiments, like laser shock-wave or Z-pinch experiments as well as for inertial confinement fusion (ICF) experiments as the plasma evolution follows its path through this domain.
Author :John von Neumann-Institut für Computing Publisher :Forschungszentrum Jülich ISBN 13 :3893367586 Total Pages :421 pages Book Rating :4.8/5 (933 download)
Book Synopsis Proceedings by : John von Neumann-Institut für Computing
Download or read book Proceedings written by John von Neumann-Institut für Computing and published by Forschungszentrum Jülich. This book was released on 2012 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Demonstration of Space-resolved X-ray Thomson Scattering Capability for Warm Dense Matter Experiments on the Z Accelerator by :
Download or read book Demonstration of Space-resolved X-ray Thomson Scattering Capability for Warm Dense Matter Experiments on the Z Accelerator written by and published by . This book was released on 2016 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experiments on the Sandia Z pulsed-power accelerator demonstrated the ability to produce warm dense matter (WDM) states with unprecedented uniformity, duration, and size, which are ideal for investigations of fundamental WDM properties. For the first time, space-resolved x-ray Thomson scattering (XRTS) spectra from shocked carbon foams were recorded on Z. The large (> 20 MA) electrical current produced by Z was used to launch Al flyer plates up to 25 km/s. The impact of the flyer plate on a CH2 foam target produced a shocked state with an estimated pressure of 0.75 Mbar, density of 0.52 g/cm3, and temperature of 4.3 eV. Both unshocked and shocked portions of the foam target were probed with 6.2 keV x-rays produced by focusing the Z-Beamlet laser onto a nearby Mn foil. The data is composed of three spatially distinct spectra that were simultaneously captured with a single spectrometer with high spectral (4.8 eV) and spatial (190 [mu]m) resolutions. Furthermore, these spectra provide detailed information on three target locations: the laser spot, the unshocked foam, and the shocked foam.
