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2 edition of Hard x-ray spectrum from a one-fluid laser plasma model found in the catalog.

Hard x-ray spectrum from a one-fluid laser plasma model

D. G Colombant

Hard x-ray spectrum from a one-fluid laser plasma model

by D. G Colombant

  • 170 Want to read
  • 23 Currently reading

Published by Naval Research Laboratory in Washington, D.C .
Written in English

    Subjects:
  • Laser plasmas

  • Edition Notes

    StatementD.G. Colombant and W.M. Manheimer
    SeriesNRL memorandum report -- 4241
    ContributionsManheimer, Wallace M., 1942-, Naval Research Laboratory (U.S.). Plasma Theory Branch
    The Physical Object
    Paginationiii, 12 p. :
    Number of Pages12
    ID Numbers
    Open LibraryOL14859269M

      The spectra presented here have been corrected for all material transmissions in the x-ray beam path and for the sensitivity and charge redistribution in the CCD as described by Fullagar et al. 30 Fig. 2(a) shows the x-ray spectrum from our laser-plasma source as a function of laser pulse energy for a constant laser pulse duration of 35 by:   Laser-wakefield accelerators (LWFAs) are high acceleration-gradient plasma-based particle accelerators capable of producing ultra-relativistic electron Cited by: 2.

      A multilayer-based optic was tested for use as an X-ray diagnostic on a laser-plasma experiment. The multilayer optic was employed to selectively pass X-rays between 55 and keV. An order of magnitude improvement in signal-to-noise ratio is achieved compared to a transmission crystal spectrometer. A multilayer response model, taking into account the source size and spectral content, Cited by: 3. Quantitative measurement of hard x-ray spectra for high intensity laser produced plasma Rev. Sci. Instrum. 83, () X-ray conversion efficiency in vacuum hohlraum experiments at the National Ignition Facility Phys. Plas ().

    with, and where θ x,y,z are the angles between the laser propagation direction and the space coordinate axes x, y, and z. Moreover, n c is the critical density of plasma, is the plasma density at the laser incidence point (x 0, y 0).The parameter is the distance between the projection of the incident laser pulse and the plasma channel centre.. When an ultrashort, ultraintense laser pulse Cited by: The ultra-bright femtosecond X-ray pulses provided by X-ray free electron lasers (XFELs) open up opportunities to study the structure and dynamics of a wide variety of systems beyond what is possible with synchrotron : Hardcover.


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Hard x-ray spectrum from a one-fluid laser plasma model by D. G Colombant Download PDF EPUB FB2

Get this from a library. Hard x-ray spectrum from a one-fluid laser plasma model. [D G Colombant; Wallace M Manheimer; Naval Research Laboratory (U.S.).

Plasma Theory Branch.]. Comparisons between hard‐x‐ray experimental spectra and those obtained from a planar one‐dimensional one‐temperature fluid laser‐produced plasma model show good agreement over several orders of magnitude in x‐ray intensity and for Nd‐laser irradiances varying between 2×10 14 and 8×10 15 W/cm key to this agreement is the careful modeling of electron‐energy flux Cited by: 2.

The x-ray spectra of plasma radiation in the wavelength range 30– Å are studied. The radiation is emitted from plasma of a vacuum discharge with storage energy less than 30 J that is initiated on an Al or Fe cathode by beam from neodymium laser with a power density up to 10 12 W cm − by: 2.

Experimental setup for time-resolved x-ray absorption spectroscopy. The figure is constructed from three-dimensional machine drawings with a sectioning cut defined by a horizontal plane at the height of the laser and x-ray beams.

This cut reveals the interior of the water jet by: The spectrum of the X-ray radiation generated by laser-produced plasma contains information about the rapidly evolving high-density high-temperature plasmas.

Spectroscopic methods are most widely used for diagnostics in laser plasma on account of the high X-ray flux. The book concludes with a description and comparison with alternate sources and applications for an x-ray laser. This work is both an introduction to x-ray lasers and a how-to guide for specialists.

It provides new entrants and others interested in the field with a comprehensive overview and describes useful analyses and experiments as guidance.

Hard X-rays emitted from this plasma exhibit a energy spectrum containing both continuum radiation and element specific X-ray emission lines. The X-ray pulse duration - inherit from the driving laser pulse duration - ranges in the hundreds of femtoseconds.

Soft X-ray spectra (30–70 Å) of aluminum plasma have been measured in experiments carried out at the Kanal-2 laser facility at laser intensities of (1–7) × W/cm2.

It is shown that the measured spectra satisfactory agree with those calculated using the RADIAN numerical by: 5. Carbon plasma X-ray spectrum 71 X-Ray Crystal Spectrograph 72 Bragg condition 72 Properties of X-ray dispersive crystals 73 Crystal X-ray minispectrometer 73 Iron plasma X-ray spectra 73 Lens-less Imaging: X-Ray Pinhole Camera 76 Imaging geometry 76 X-ray images of copper plasma 77Cited by: In a seminal paper describing the excitation of x-rays by electrons accelerated in air in the wake field of a laser field the authors show a spectrum of continuous hard x-rays and K α x-rays as a function of laser intensity between 10 Wcm This is shown with the.

Generation of X-rays from Laser-Produced Plasmas X-ray radiating plasma generation Generating X-rays with a pulsed laser is possible on any matter if the focal intensity is greater than W/cm2 for a nanosecond pulse [2].

For higher intensities, higher temperatures are obtained and thus shorter wavelengths for the emitted X-rays.

In this. Abstract The shape and intensity of the continuous X-ray spectrum of a laser plasma are calculated in the keV range. The spectral calculations are based on a hydrodynamic analysis of the laser corona, with allowance for ionization kinetics; it is assumed that there are anomalously small values of electron thermal conductivity near the critical point.

Abstract Hard X-ray spectra from laser-produced plasmas were recorded by a transmission crystal survey spectrometer covering the 12 keV to 60 keV energy range with a resolving power of F/δE{nearly equal to} This emission is of interest for the development of hard X-ray backlighters and hot electron by: X-ray spectroscopy involves the transition from ground state to excited state in XAS (X-ray absorption spectroscopy) or probes the decay process in XES (X-ray emission spectroscopy), assumed as ideal method for the description of chemical nature, oxidation states of metallic NPs and environment of associated atoms in molecules [48].X-ray absorption near-edge structure (XANES) has been.

X-ray conversion efficiency can be increased by using a short-wavelength laser, i.e., by tripling the frequency of a Nd:glass laser. The x-ray spectrum may contain strong line components and the production of such monochromatic x-rays can be maximized by creating a plasma that is populated predominantly with the relevant by: 2.

One example of x-ray source from laser-plasma acceleration is betatron x-ray radiation, which has potential for many applications [9, 10]. This source is typically produced with ultrashort (laser pulses, at intensities above 10 18 W cm −2.

An Introduction to the Atomic and Radiation Physics of Plasmas; Evidence for strong cyclotron line emission in hard X-ray spectrum of Hercules X1.

Astrophys. J., (3), Creation and diagnosis of a soliddensity plasma with an X-ray free-electron laser. Nature, (), Cited by: 3. In addition, simulations for a hard x-ray spectrum having keV average energy were performed to investigate the substrate electron effects in hard x-ray lithography.

In the experiments, it was. Creation and diagnosis of a solid-density plasma with an X-ray free-electron laser S. M Ka emission spectrum contains information on the CSD of the hot Creation and diagnosis of a solid. data. The soft, subkilovolt x-ray spectrum emitted from a laser­ produced plasma is an important in­ dicator of the plasma temperature.

Measuring this spectrum provides us with invaluable and otherwise unob­ tainable information about plasma conditions in an IeF experiment. IeF implosion diagnostics are chal­ lenging because the signals File Size: 1MB.

X-rays make up X-radiation, a form of high-energy electromagnetic X-rays have a wavelength ranging from 10 picometres to 10 nanometres, corresponding to frequencies in the range 30 petahertz to 30 exahertz (3×10 16 Hz to 3×10 19 Hz) and energies in the range eV to keV.X-ray wavelengths are shorter than those of UV rays and typically longer than those of gamma rays.Laser-driven Plasma X-ray Source for Pump-Probe Spectroscopy and Imaging.

A fs-pulsed laser-induced plasma X-ray source (PXS) generating hard Xray radiation in the - energy range of 3 24 keV has been installed and commissioned at ELI beamlines.

The compact table-top PXS will provide a wide range of experimental setups for scientists and.Study of X-ray Spectrum of Laser-produced Gold Plasmas and intensities of X-ray spectral lines emitted in the range to angstroms by a target made of gold alloyed to a few percent of aluminium irradiated by a laser pulse.

Aluminium yields the wavelength calibration and a monitoring of the temperature and the density of the plasma.