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20 100 Kev Kalpha X Ray Source Generation By Short Pulse High Intensity Lasers
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Book Synopsis 20-100 KeV K[alpha] X-Ray Source Generation by Short Pulse High Intensity Lasers by :
Download or read book 20-100 KeV K[alpha] X-Ray Source Generation by Short Pulse High Intensity Lasers written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We are studying the feasibility of utilizing K[alpha] x-ray sources in the range of 20 to 100 keV as a backlighters for imaging various stages of implosions and high areal density planar samples driven by the NIF laser facility. The hard x-ray K[alpha] sources are created by relativistic electron plasma interactions in the target material after a radiation by short pulse high intensity lasers. In order to understand K[alpha] source characteristics such as production efficiency and brightness as a function of laser parameters, we have performed experiments using the 10 J, 100 fs JanUSP laser. We utilized single-photon counting spectroscopy and x-ray imaging diagnostics to characterize the K[alpha] source. We find that the K[alpha] conversion efficiency from the laser energy is ≈ 3 x 10−4.
Book Synopsis High Energy X-Ray Source Generation by Short Pulse High Intensity Lasers by :
Download or read book High Energy X-Ray Source Generation by Short Pulse High Intensity Lasers written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We are studying the feasibility of utilizing K[alpha] x-ray sources in the range of 20 to 100 keV as a backlighters for imaging various stages of implosions and high areal density planar samples driven by the NIF laser facility. The hard x-ray K[alpha] sources are created by relativistic electron plasma interactions in the target material after a radiation by short pulse high intensity lasers. In order to understand K[alpha] source characteristics such as production efficiency and brightness as a function of laser parameters, we have performed experiments using the 10 J, 100 fs JanUSP laser. We utilized single-photon counting spectroscopy and x-ray imaging diagnostics to characterize the K[alpha] source. We find that the K[alpha] conversion efficiency from the laser energy at 22 keV is[approx] 3 x 10[sup -4].
Book Synopsis High Energy K[alpha] Radiography Using High-intensity, Short-pulse Lasers by :
Download or read book High Energy K[alpha] Radiography Using High-intensity, Short-pulse Lasers written by and published by . This book was released on 2005 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have performed experiments using Callisto, the Vulcan 100 TW and the Vulcan Petawatt high intensity lasers to understand the characteristics of high energy, K[alpha] x-ray sources and to implement workable radiography solutions at 20-100 keV. Our measurements show that the K[alpha] size from a simple foil target is larger than 60 [mu]m, far larger than the experiment resolution requirement. The total K[alpha] yield is independent of target thicknesses verifying that refluxing plays a major role in photon generation. Smaller radiating volumes emit brighter K[alpha] radiation. 1-D radiography experiments using small-edge-on foils resolved 10 [mu]m features with high contrast. We tested a variety of small volume 2-D point sources such as cones, wires, and embedded wires, measuring photon yields and comparing our measurements with predictions from hybrid-PIC LSP simulations. In addition to high-energy, high-resolution backlighters, future experiments will also need imaging detectors and diagnostic tools that are workable in the 20-100 keV energy range. An initial look at some of these detector issues is also presented.
Book Synopsis Free Electron Lasers 2002 by : K.-J. Kim
Download or read book Free Electron Lasers 2002 written by K.-J. Kim and published by Newnes. This book was released on 2012-12-02 with total page 727 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the Proceedings of the 24th International Free Electron Laser Conference and the 9th Free Electron Laser Users Workshop, which were held on September 9-13, 2002 at Argonne National Laboratory. Part I has been reprinted from Nucl. Instr. and Meth. A 507 (2003), Nos. 1-2.
Book Synopsis Titanium K-alpha X-ray Imaging Radiography of Imploding Microshells Using a Spherically Bent Crystal by : James Anthony King
Download or read book Titanium K-alpha X-ray Imaging Radiography of Imploding Microshells Using a Spherically Bent Crystal written by James Anthony King and published by . This book was released on 2006 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ultralshort High Peak Power Lasers and Generation of Hard Incoherent X-Rays by :
Download or read book Ultralshort High Peak Power Lasers and Generation of Hard Incoherent X-Rays written by and published by . This book was released on 1992 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The design, construction, and use of high peak power infrared laser pulses for the generation of diagnostic (20 keV to 150 keV) x-rays are discussed. A review of recent laser-plasma generation of diagnostic x-rays is presented. The advantages of such sources include subpicosecond pulse duration and extremely small source size. Because of their short duration, it shoud be possible to form time-gated medical images with up to eight times less x-ray flux than with conventional x-ray sources. Details of a next generation laser driver are also presented. Generation of 20-fs pulses from a regeneratively initiated, self-mode-locked Ti: Sapphire laser is described. Techniques for amplification of these pulses to peak powers of 5 TW are presented.
Book Synopsis High-Energy-Density Physics by : R Paul Drake
Download or read book High-Energy-Density Physics written by R Paul Drake and published by Springer. This book was released on 2018-01-02 with total page 671 pages. Available in PDF, EPUB and Kindle. Book excerpt: The raw numbers of high-energy-density physics are amazing: shock waves at hundreds of km/s (approaching a million km per hour), temperatures of millions of degrees, and pressures that exceed 100 million atmospheres. This title surveys the production of high-energy-density conditions, the fundamental plasma and hydrodynamic models that can describe them and the problem of scaling from the laboratory to the cosmos. Connections to astrophysics are discussed throughout. The book is intended to support coursework in high-energy-density physics, to meet the needs of new researchers in this field, and also to serve as a useful reference on the fundamentals. Specifically the book has been designed to enable academics in physics, astrophysics, applied physics and engineering departments to provide in a single-course, an introduction to fluid mechanics and radiative transfer, with dramatic applications in the field of high-energy-density systems. This second edition includes pedagogic improvements to the presentation throughout and additional material on equations of state, heat waves, and ionization fronts, as well as problem sets accompanied by solutions.
Book Synopsis Generation of Intense Ultrashort X-ray Pulses by :
Download or read book Generation of Intense Ultrashort X-ray Pulses written by and published by . This book was released on 1993 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modeling of x-ray emission from targets heated by an ultrashort-pulse high-intensity optical laser is discussed. One application, using the emitted x rays, is pumping inner-shell photo-ionized x-ray lasers. Short wavelength lasing ([lambda] ≤ 15 Å) requires fast rise-time 1--3 key x rays to ionize inner K-shell electrons. It has been shown that structured targets, consisting of grooves on a solid material or a composite of clusters, have high absorption. We model grooved targets as an ensemble of exploding foils finding that the rise time of x rays is rapid enough for pumping inner-shell x-ray lasers. We show that simple atomic models can overestimate the energy in x-ray emission bands. High-Z materials are found to have the highest conversion efficiency but mid-Z materials can be used to provide a band of emission at a particular energy. We show that the pondermotive inhibition of expansion has only a small effect on the x-ray emission. The emission of a Au plasma is found to be appropriate for pumping inner-shell lasing at 14.6 Å in Ne. The required optical laser intensity is of order 1017 W/cm2 using a 100 fsec FWHM duration pulse. To produce a laser with a gain-length product of order 10 requires 5--15 J of optical energy.
Book Synopsis Generation of ultra-short pulse hard x-rays with ultra-short pulse intense laser by : Yutaka Ueshima
Download or read book Generation of ultra-short pulse hard x-rays with ultra-short pulse intense laser written by Yutaka Ueshima and published by . This book was released on 1998 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Short Pulse Laser Interactions With Matter: An Introduction by : Paul Gibbon
Download or read book Short Pulse Laser Interactions With Matter: An Introduction written by Paul Gibbon and published by World Scientific. This book was released on 2005-09-05 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book represents the first comprehensive treatment of the subject, covering the theoretical principles, present experimental status and important applications of short-pulse laser-matter interactions.Femtosecond lasers have undergone dramatic technological advances over the last fifteen years, generating a whole host of new research activities under the theme of “ultrafast science”. The focused light from these devices is so intense that ordinary matter is torn apart within a few laser cycles. This book takes a close-up look at the exotic physical phenomena which arise as a result of this new form of “light-matter” interaction, covering a diverse set of topics including multiphoton ionization, rapid heatwaves, fast particle generation and relativistic self-channeling. These processes are central to a number of exciting new applications in other fields, such as microholography, optical particle accelerators and photonuclear physics.Repository for numerical models described in Chapter 6 can be found at www.fz-juelich.de/zam/cams/plasma/SPLIM/./a
Book Synopsis AASERT-92 Grant 'X-Rays from High-Intensity, Short-Pulse Interactions'. by :
Download or read book AASERT-92 Grant 'X-Rays from High-Intensity, Short-Pulse Interactions'. written by and published by . This book was released on 1996 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We demonstrated a novel sources of pulsed terahertz radiation and x rays which have ultrashort pulse duration and high intensity; this source is based on emission from ultrashort, laser heated gases and solids. We have examined the propagation of high intensity (up to 1019 W/cm2) ultrashort (100 fs) laser pulses in dense gases; this work has application to variety of studies involving high power laser pulses such as harmonic generation x ray lasers and laser wakefield accelerators. We studied schemes for new x ray lasers. They involve rapid recombination of highly ionized atoms (produced by multiphoton ionization) bellowed by lasing on Ly-alpha x-ray transitions. We developed a new Thomson scattering technique using multiple, ultrashort laser pulses; these studies were done in multiphoton ionized plasmas of interest to the construction of new x ray lasers. We have examined conditions for pumping recombination x-ray lasers using multiphoton ionized -gases. We have examined the non-Maxwellian energy distributions in multi photon ionized gases. Finally, we examined both the coherent and incoherent emission from short pulse laser excited clusters. This latest work has established that sub-wavelength sized clusters can be a source of intense plasma emission. and that the clusters are a source of harmonics from laser matter interaction.
Book Synopsis Characteristics of High Energy Ka and Bremsstrahlung Sources Generated by Short Pulse Petawatt Lasers by : H. Park
Download or read book Characteristics of High Energy Ka and Bremsstrahlung Sources Generated by Short Pulse Petawatt Lasers written by H. Park and published by . This book was released on 2004 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have measured the characteristics of high energy K{alpha} sources created with the Vulcan Petawatt laser at RAL and the JanUSP laser at LLNL. High energy x-ray backlighters will be essential for radiographing High-Energy-Density Experimental Science (HEDES) targets for NIF projects especially to probe implosions and high areal density planar samples. Hard K{alpha} x-ray photons are created through relativistic electron plasma interactions in the target material after irradiation by short pulse high intensity lasers. For our Vulcan experiment, we employed a CsI scintillator/CCD camera for imaging and a CCD camera for single photon counting. We measured the Ag K{alpha} source (22 keV) size using a pinhole array and the K{alpha} flux using a single photon counting method. We also radiographed a high Z target using the high energy broadband x-rays generated from these short pulse lasers. This paper will present results from these experiments.
Book Synopsis High K-alpha X-ray Conversion Efficiency From Extended Source Gas Jet Targets Irradiated by Ultra Short Laser Pulses by :
Download or read book High K-alpha X-ray Conversion Efficiency From Extended Source Gas Jet Targets Irradiated by Ultra Short Laser Pulses written by and published by . This book was released on 2007 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The absolute laser conversion efficiency to K{sub {alpha}}-like inner shell x-rays (integrated from K{sub {alpha}} to K{sub {beta}}) is observed to be an order of magnitude higher in argon gas jets than in solid targets due to enhanced emission from higher ionization stages following ultra short pulse laser irradiation. Excluding the higher ionization stages, the conversion efficiency to near-cold K{sub {alpha}} is the same in gas jets as in solid targets. These results demonstrate that gas jet targets are bright, high conversion efficiency, high repetition rate, debris-free multi-keV x-ray sources for spectrally resolved scattering and backlighting of rapidly evolving dense matter.
Book Synopsis Optics for Fourth-generation X-ray Sources by :
Download or read book Optics for Fourth-generation X-ray Sources written by and published by . This book was released on 2001 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fusión Nuclear written by and published by . This book was released on 2004-12 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ultra Short Pulse Generation for High Intensity Laser Application by :
Download or read book Ultra Short Pulse Generation for High Intensity Laser Application written by and published by . This book was released on 1993 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis X-ray Generation by High Intensity Laser Pulses by : Stephanie Kathrin Brauckmann
Download or read book X-ray Generation by High Intensity Laser Pulses written by Stephanie Kathrin Brauckmann and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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