DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Soft X-ray emission from laser-irradiated gold foils

Journal Article · · Physics of Plasmas
DOI: https://doi.org/10.1063/1.5036934 · OSTI ID:1461199
 [1]; ORCiD logo [1];  [2];  [2];  [1];  [1];  [2];  [3];  [1]
  1. Univ. of Michigan, Ann Arbor, MI (United States)
  2. Soreq Research Center, Yavne (Israel)
  3. Nuclear Research Center Negev, Beer-Sheva (Israel); Ben-Gurion Univ., Beer-Sheva (Israel)

Here, this paper reports measurements of soft-x-ray emission from gold foils irradiated by 6 ns laser pulses, and analysis and simulations of the observations. These foils can be used as x-ray sources to drive a wide range of experiments. A multichannel, photodiode array measured the time-resolved, soft-x-ray emission. A soft-x-ray framing camera imaged the emission in selected energy bands. Foil thicknesses were from 0.5 to 1.5 μm. The imaging data show that the region emitting soft x-rays grows throughout the laser drive, on both the front and rear surfaces. Analysis of the emitted radiation flux from the rear surface, taking the time-dependent spot size into account, showed that the peak effective temperature of 0.5-μm-thick foils is near 88 eV, while that of 0.75-μm-thick foils is near 78 eV. A Monte Carlo method was used to evaluate the component of the uncertainty in the effective temperature introduced by variations in signal voltages and by uncertainty in the size of the emitting spot. This was found to be near ±2 eV in most cases. Simple theoretical considerations explain the main features of the observations. The Florence code, working with atomic physics from sophisticated models, proved able to reproduce the main features of the observed spectra with 1D simulations in which the laser energy flux was adjusted on the basis of the observed lateral spreading of energy.

Research Organization:
Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP)
Grant/Contract Number:
NA0003527
OSTI ID:
1461199
Journal Information:
Physics of Plasmas, Vol. 25, Issue 7; ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 7 works
Citation information provided by
Web of Science

References (57)

Multi-keV x-ray conversion efficiencies of laser-preexploded titanium foils journal September 2005
Radiation hydrodynamic theory of double ablation fronts in direct-drive inertial confinement fusion journal August 2009
Characterization of an x-ray-flux source for the production of high-energy-density plasmas journal December 1992
SEMILLAC II: A new model for spectral behavior of hot plasmas journal September 2014
Modeling, measurements, and analysis of x-ray emission from 0.26- μ m-laser-irradiated gold disks journal November 1988
X-ray emission and transport in gold plasmas generated by 351-nm laser irradiation journal March 1991
Dynamics and stability of radiation-driven double ablation front structures journal December 2010
Conversion of laser light into soft x rays. Part II: Numerical results journal January 1990
High-resolution x-ray imaging of planar foils irradiated by the Nike KrF laser journal May 1997
Omega Dante soft x-ray power diagnostic component calibration at the National Synchrotron Light Source journal October 2004
The role of cavity shape on spatially confined laser-induced breakdown spectroscopy journal July 2018
Operating characteristics of a clamp klystron oscillator at E-band journal July 2018
Simulating radiative shocks with the CRASH laser package journal March 2013
Evolution of filaments and associated magnetic fields produced by the Weibel Instability in two counterstreaming laser plasmas journal June 2018
Different methods of reconstructing spectra from filtered x-ray diode measurements journal October 2008
Time and spatially resolved measurements of x-ray burnthrough and re-emission in Au and Au:Dy:Nd foils journal March 2003
X-ray flux from a burnthrough Au foil journal January 1994
Long duration X-ray drive hydrodynamics experiments relevant for laboratory astrophysics journal December 2015
Radiation drive in laser‐heated hohlraums journal May 1996
Measurements of Radial Heat Wave Propagation in Laser-Produced Exploding-Foil Plasmas journal October 1994
Design of Laboratory Experiments to Study Photoionization Fronts Driven by Thermal Sources journal December 2016
High-temperature dynamic hohlraums on the pulsed power driver Z journal May 1999
Enhanced accuracy of x-ray spectra reconstruction from filtered diode array measurements by adding a time integrated spectrometer journal April 2017
Dynamic Hohlraums as x-ray sources in high-energy density science journal January 2008
SEMILLAC: A new hybrid atomic model of hot dense plasmas journal September 2013
Laser irradiation of disk targets at 0.53 μm wavelength journal January 1983
Absorption spectroscopy of a laboratory photoionized plasma experiment at Z journal March 2014
Titanium and germanium lined hohlraums and halfraums as multi-keV x-ray radiators journal May 2009
Spectroscopic diagnostics of laser induced plasma and self-absorption effects in Al lines journal July 2018
Measurements of laser generated soft X-ray emission from irradiated gold foils journal August 2016
Plasma evolution from laser‐driven gold disks. II. Computational design and analysis journal October 1990
Measurement of cryogenic target position and implosion core offsets on OMEGA journal July 2018
Simulating radiative shocks in nozzle shock tubes journal June 2012
Observation of ablatively accelerated thin foils by x‐ray backlighting at 0.35‐μm laser wavelength journal December 1984
Soft X-ray emission from laser-irradiated gold foils journal July 2018
Uncertainty analysis technique for OMEGA Dante measurements journal October 2010
Micron-scale resolution radiography of laser-accelerated and laser-exploded foils using an yttrium x-ray laser
  • Cauble, R.; Da Silva, L. B.; Barbee, T. W.
  • The 4th international colloquium: X-ray lasers 1994, AIP Conference Proceedings https://doi.org/10.1063/1.47992
conference January 1995
HULLAC, an integrated computer package for atomic processes in plasmas journal October 2001
Relative x-ray backlighter intensity comparison of Ti and Ti/Sc combination foils driven in double-sided and single-sided laser configuration journal January 2001
Plasma transport coefficients in a magnetic field by direct numerical solution of the Fokker–Planck equation journal January 1986
Super-transition-arrays: A model for the spectral analysis of hot, dense plasma journal September 1989
The upgrade to the OMEGA laser system journal January 1995
Development of the indirect‐drive approach to inertial confinement fusion and the target physics basis for ignition and gain journal November 1995
A higher-than-predicted measurement of iron opacity at solar interior temperatures journal December 2014
Hohlraum modeling for opacity experiments on the National Ignition Facility journal June 2018
Crash: a Block-Adaptive-Mesh code for Radiative Shock Hydrodynamics—Implementation and Verification journal May 2011
ZAPP: The Z Astrophysical Plasma Properties collaboration journal May 2014
Conversion of laser light into x rays in thin foil targets journal March 1990
Observation of soft x‐ray emission in the corona of 0.35‐μm laser‐irradiated gold disks journal August 1991
Diagnostics of dielectronic processes in laser produced samarium plasma journal March 2012
Measurement of a Dispersion Curve for Linear-Regime Rayleigh-Taylor Growth Rates in Laser-Driven Planar Targets journal April 1997
HYADES—A plasma hydrodynamics code for dense plasma studies journal January 1994
Spectral measurements of asymmetrically irradiated capsule backlighters journal September 2016
High-Energy-Density Physics book January 2018
The Physics of Inertial Fusion book January 2004
High-energy-density physics journal June 2010
Simulating radiative shocks in nozzle shock tubes text January 2011

Cited By (1)


Similar Records