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Title: Homogeneous, Micron-Scale High-Energy-Density Matter Generated by Relativistic Laser-Solid Interactions

Journal Article · · Physical Review Letters
ORCiD logo [1];  [2];  [3];  [4]; ORCiD logo [3];  [5];  [3]; ORCiD logo [6];  [2];  [2]; ORCiD logo [6];  [7];  [8];  [6]; ORCiD logo [6];  [6]; ORCiD logo [2];  [6]; ORCiD logo [7]
  1. Univ. of Alberta, Edmonton, AB (Canada); Univ. of California, Irvine, CA (United States)
  2. Univ. of California, Irvine, CA (United States)
  3. Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
  4. Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
  5. Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
  6. Colorado State Univ., Fort Collins, CO (United States)
  7. Univ. of Alberta, Edmonton, AB (Canada)
  8. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Short-pulse, laser-solid interactions provide a unique platform for studying complex high-energy-density mat ter. We present the first demonstration of solid density, micron-scale keV plasmas uniformly heated by a high contrast, 400 nm laser at intensities up to 2×1021 W/cm2. High-resolution spectral analysis of X-ray emission reveals uniform heating up to 3.0 keV over 1 µm depths. Particle-in-cell simulations indicate the production of a uniformly heated keV plasma to depths of 2 µm. The significant bulk heating and presence of highly-ionized ions deep within the target are attributed to the few MeV hot electrons that become trapped and undergo refluxing within the target sheath fields. In conclusion, these conditions enable the differentiation of atomic physics models such as ionization potential depression in high energy density environments.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Colorado State Univ., Fort Collins, CO (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Fusion Energy Sciences (FES); USDOE Laboratory Directed Research and Development (LDRD) Program; National Science Foundation (NSF); Natural Sciences and Engineering Research Council of Canada (NSERC)
Grant/Contract Number:
AC52-07NA27344; NA0003525; 20180040DR; SC0019076; SC0021246; B643845; PHY-1753165; DMR-1548924; RGPIN-2021-04373
OSTI ID:
2293652
Report Number(s):
LLNL-JRNL-856219; 1085548
Journal Information:
Physical Review Letters, Vol. 129, Issue 13; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (54)

High-Energy-Density Physics book January 2018
Experimental astrophysics with high power lasers and Z pinches journal August 2006
Experimental investigation of opacity models for stellar interior, inertial fusion, and high energy density plasmas journal May 2009
A higher-than-predicted measurement of iron opacity at solar interior temperatures journal December 2014
Systematic Study of L -Shell Opacity at Stellar Interior Temperatures journal June 2019
The physics basis for ignition using indirect-drive targets on the National Ignition Facility journal February 2004
Status of and prospects for the fast ignition inertial fusion concept journal May 2007
Inertial-confinement fusion with lasers journal May 2016
X-ray spectroscopy of buried layer foils irradiated at laser intensities in excess of 1020 W/cm2 journal June 2009
Observations of the Effect of Ionization-Potential Depression in Hot Dense Plasma journal June 2013
Measurement and simulation of the temperature evolution of a short pulse laser heated buried layer target journal December 2017
Investigation of the hydrodynamics and emission of a laser heated tamped high-Z target journal June 2018
Laboratory measurements of geometrical effects in the x-ray emission of optically thick lines for ICF diagnostics journal June 2019
Comparing plasma conditions in short-pulse-heated foils via fine-structure x-ray emission journal March 2021
High temperature, high density opacity measurements using short pulse lasers journal August 2010
Measurements of Electron Transport in Foils Irradiated with a Picosecond Time Scale Laser Pulse journal May 2011
Magnetic field in short-pulse high-intensity laser-solid experiments journal August 1998
Effects of buried high-Z layers on fast electron propagation journal February 2014
A method to achieve rapid localised deep heating in a laser irradiated solid density target journal September 2016
Rapid heating of solid density material by a petawatt laser journal May 2005
Fast-electron transport and heating of solid targets in high-intensity laser interactions measured by K α fluorescence journal April 2006
Collisional Relaxation of Superthermal Electrons Generated by Relativistic Laser Pulses in Dense Plasma journal December 2006
Bulk heating of solid-density plasmas during high-intensity-laser plasma interactions journal January 2009
Analysis of the fast electron scaling theory for the heating of a solid target journal August 2016
Enhanced Isochoric Heating from Fast Electrons Produced by High-Contrast, Relativistic-Intensity Laser Pulses journal February 2010
Generation of keV hot near-solid density plasma states at high contrast laser-matter interaction journal August 2018
Extreme ionization of heavy atoms in solid-density plasmas by relativistic second-harmonic laser pulses journal July 2020
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
Experimental Characterization of a Strongly Coupled Solid Density Plasma Generated in a Short-pulse Laser Target Interaction journal July 2005
Hot surface ionic line emission and cold K-inner shell emission from petawatt-laser-irradiated Cu foil targets journal April 2006
Temperature sensitivity of Cu Kα imaging efficiency using a spherical Bragg reflecting crystal journal February 2007
Spectral analysis of x-ray emission created by intense laser irradiation of copper materialsa) journal July 2012
Effects of target heating on experiments using and diagnostics journal September 2015
X-ray absorption spectroscopy study of energy transport in foil targets heated by petawatt laser pulses journal March 2018
A study of picosecond laser–solid interactions up to 10 19 W cm −2 journal February 1997
Spatial characteristics of K α x-ray emission from relativistic femtosecond laser plasmas journal November 2003
085  PW laser operation at 33  Hz and high-contrast ultrahigh-intensity λ = 400  nm second-harmonic beamline journal January 2017
Hybrid atomic models for spectroscopic plasma diagnostics journal May 2007
Three-dimensional electromagnetic relativistic particle-in-cell code VLPL (Virtual Laser Plasma Lab) journal April 1999
Dielectronic Satellite Spectra for Highly-Charged Helium-Like Ion Lines journal October 1972
Electron temperature and density measurements in laser-produced large-scale-length gas-bag plasmas by x-ray spectroscopy journal January 1997
The physics of radiation transport in dense plasmas journal May 2002
High-intensity laser interactions with mass-limited solid targets and implications for fast-ignition experiments on OMEGA EP journal May 2007
Dynamics of bulk electron heating and ionization in solid density plasmas driven by ultra-short relativistic laser pulses journal June 2016
Inhibition of fast electron energy deposition due to preplasma filling of cone-attached targets journal January 2008
Dynamics of hot refluxing electrons in ultra-short relativistic laser foil interactions journal February 2022
Plasma Expansion into a Vacuum journal May 2003
Electron Temperature Scaling in Laser Interaction with Solids journal November 2011
Lowering of the Ionization Energy for a Plasma in Thermodynamic Equilibrium journal January 1963
Lowering of Ionization Potentials in Plasmas journal April 1966
Direct Measurements of the Ionization Potential Depression in a Dense Plasma journal August 2012
Measurements of continuum lowering in solid-density plasmas created from elements and compounds journal May 2016
Benchmark Measurements of the Ionization Balance of Non-Local-Thermodynamic-Equilibrium Gold Plasmas journal November 2007
X-ray spectral measurements and collisional-radiative modeling of hot, gold plasmas at the omega laser journal October 2008