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Title: Development of broadband x-ray radiography for diagnosing magnetically driven cylindrically compressed matter

Journal Article · · Physics of Plasmas
DOI:https://doi.org/10.1063/1.5100173· OSTI ID:1569178

Experiments and modeling of x-ray radiography of millimeter diameter solid Al wires with laser-produced broadband x rays are reported. Experiments were performed using the 50-TW Leopard short-pulse laser in a laser and pulsed power chamber at the Nevada Terawatt Facility. To characterize broadband x rays and demonstrate a radiographic capability, bremsstrahlung, escaping electrons, and radiograph images of Al wires were simultaneously measured. The angularly resolved x-ray spectra are modeled by comparing measured bremsstrahlung signals in the range between 10 and ~500 keV with hybrid particle-in-cell simulations. Transmission of Al wires from the radiograph images is further simulated with a Monte Carlo code. The measured transmission profiles of Al wires with three different diameters agree with calculations when a simulated x-ray spectrum composed of line emissions and bremsstrahlung is used with a source size of 600 ± 200 μm. Transmission calculations with only 22 keV Ag Kα or an exponential x-ray spectrum do not reproduce the measurement, suggesting that the accurate determination of an x-ray source spectrum, as well as the inclusion of the photon sensitivity of the detector, is critical in transmission calculations to infer the density of an object. As a result, the laser-based broadband x-ray radiography that was developed has been successfully implemented in a pulsed power chamber for future laser-pulsed-power coupled experiments.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF)
Grant/Contract Number:
AC52-07NA27344; 1707357; FG-02-05ER54834
OSTI ID:
1569178
Alternate ID(s):
OSTI ID: 1547666
Report Number(s):
LLNL-JRNL-792340; LLNL-JRNL-782061; 991687; TRN: US2100257
Journal Information:
Physics of Plasmas, Vol. 26, Issue 8; ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 5 works
Citation information provided by
Web of Science

References (45)

Performance and Mix Measurements of Indirect Drive Cu-Doped Be Implosions journal May 2015
Characteristics of high energy Kα and Bremsstrahlung sources generated by short pulse petawatt lasers journal October 2004
Bremsstrahlung and Kα fluorescence measurements for inferring conversion efficiencies into fast ignition relevant hot electrons journal August 2009
Development of Compton radiography of inertial confinement fusion implosions journal May 2011
Characterization of a spherically bent quartz crystal for Kα x-ray imaging of laser plasmas using a focusing monochromator geometry journal March 2011
Measuring fast electron spectra and laser absorption in relativistic laser-solid interactions using differential bremsstrahlung photon detectors journal August 2013
Radiological characterisation of photon radiation from ultra-high-intensity laser–plasma and nuclear interactions journal August 2006
Refluxing of fast electrons in solid targets irradiated by intense, picosecond laser pulses journal January 2011
Characterization of intense laser-produced fast electrons using hard x-rays via bremsstrahlung journal September 2015
Evaluating laser-driven Bremsstrahlung radiation sources for imaging and analysis of nuclear waste packages journal November 2016
Systematic search for spherical crystal X-ray microscopes matching 1–25 keV spectral line sources journal December 2016
Short pulse, high resolution, backlighters for point projection high-energy radiography at the National Ignition Facility journal May 2017
Laser-driven cylindrical compression of targets for fast electron transport study in warm and dense plasmas journal April 2011
Flash Kα radiography of laser-driven solid sphere compression for fast ignition journal June 2016
Megagauss Magnetic Fields for Magnetized Laser-Plasma Experiments journal February 2008
Hard x-ray production from high intensity laser solid interactions (invited) journal January 1999
Time-resolved compression of a capsule with a cone to high density for fast-ignition laser fusion journal December 2014
Measurement of pulsed-power-driven magnetic fields via proton deflectometry journal December 2014
K α fluorescence measurement of relativistic electron transport in the context of fast ignition journal June 2004
X-ray backlighting for the National Ignition Facility (invited) journal January 2001
Response functions of imaging plates to photons, electrons and 4 He particles journal October 2013
Characterization of a gamma-ray source based on a laser-plasma accelerator with applications to radiography journal March 2002
Development of the 50 TW laser for joint experiments with 1 MA z-pinches journal August 2010
Characterization of fast electron divergence and energy spectrum from modeling of angularly resolved bremsstrahlung measurements journal December 2018
Soft x-ray backlighting of cryogenic implosions using a narrowband crystal imaging system (invited) journal November 2014
Fast electron temperature and conversion efficiency measurements in laser-irradiated foil targets using a bremsstrahlung x-ray detector journal June 2011
Relativistic Quasimonoenergetic Positron Jets from Intense Laser-Solid Interactions journal July 2010
Characterisation of a MeV Bremsstrahlung x-ray source produced from a high intensity laser for high areal density object radiography journal August 2013
MeV bremsstrahlung X rays from intense laser interaction with solid foils journal December 2018
Measurement of the Ionization State and Electron Temperature of Plasma during the Ablation Stage of a Wire-Array Z Pinch Using Absorption Spectroscopy journal June 2011
Simulation techniques for heavy ion fusion chamber transport
  • Welch, D. R.; Rose, D. V.; Oliver, B. V.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 464, Issue 1-3 https://doi.org/10.1016/S0168-9002(01)00024-9
journal May 2001
X-ray penumbral imaging diagnostic developments at the National Ignition Facility
  • Felker, Sean J.; Bachmann, Benjamin; Abu Shawareb, Hatim
  • Target Diagnostics Physics and Engineering for Inertial Confinement Fusion VI https://doi.org/10.1117/12.2274611
conference September 2017
A Bremsstrahlung spectrometer using k-edge and differential filters with image plate dosimeters journal October 2008
Hot electron diagnostic in a solid laser target by K -shell lines measurement from ultraintense laser–plasma interactions (3×1020 W/cm2,⩽400 J) journal January 2001
Evaluation of the sensitivity and fading characteristics of an image plate system for x-ray diagnostics journal November 2008
Ti Kα radiography of Cu-doped plastic microshell implosions via spherically bent crystal imaging journal May 2005
Study of laser produced plasma in a longitudinal magnetic field journal June 2019
A compact electron spectrometer for hot electron measurement in pulsed laser solid interaction journal March 2003
Effect of plasma density scale length on the properties of bremsstrahlung x-ray sources created by picosecond laser pulses journal January 2009
Isentropic compression experiments on the Sandia Z accelerator journal May 2000
Design and performance of an imaging plate system for X-ray diffraction study
  • Amemiya, Yoshiyuki; Matsushita, Tadashi; Nakagawa, Atsushi
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 266, Issue 1-3 https://doi.org/10.1016/0168-9002(88)90458-5
journal April 1988
Features of Particle and Heavy Ion Transport code System (PHITS) version 3.02 journal January 2018
Laser-driven x-ray and neutron source development for industrial applications of plasma accelerators journal November 2015
Effects of target charging and ion emission on the energy spectrum of emitted electrons journal May 2011
Picosecond x-rays from subpicosecond-laser-produced hot-dense matter journal July 1995

Figures / Tables (7)


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