Two-dimensional parametric design of short pulse laser driven iron opacity experiments

London, Richard A.; Colón Quiñones, Roberto A.; Martin, Madison E.; Whitley, Heather D.

doi:10.1063/5.0085635

Two-dimensional parametric design of short pulse laser driven iron opacity experiments

Journal Article · Mon May 02 00:00:00 EDT 2022 · Physics of Plasmas

DOI:https://doi.org/10.1063/5.0085635· OSTI ID:1872691

^[1]; ^[2]; ^[1]; ^[1]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Momentus, Inc., San Jose, CA (United States)

High intensity short pulse lasers are commonly used to create high temperature and high density plasmas. These plasmas are used to study fundamental properties such as the equation of state and opacity. The targets often use small-diameter, thin buried layers of the materials of interest, surrounded by a tamper of low atomic number material such as plastic. Computational modeling is used to design and interpret experiments with short pulse lasers. Most of the modeling to date has assumed one-dimensional plane-parallel geometry. In this paper, the effects of radial gradients in the irradiation of thin planar targets are studied with one- and two-dimensional radiation/hydrodynamic simulations. It is found that the main effect of radial gradients is the averaging of plasma conditions and x-ray emission over the pattern of irradiation. Additionally, differences between one- and two-dimensional simulations arise because the plasma conditions and x-ray emission are, in general, nonlinear functions of the temperature of the plasma and thereby also nonlinear functions of the irradiation intensity. The differences increase with the ratio of the buried layer radius to the laser spot radius. The root mean square difference in the inferred iron L-shell opacity is less than 30% when the ratio is less than 1.0 and about 70% when the ratio is 1.5.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1872691

Alternate ID(s):: OSTI ID: 1866021

Report Number(s):: LLNL-JRNL-830883; 1046629

Journal Information:: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 5 Vol. 29; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

References (14)

Cretin—a radiative transfer capability for laboratory plasmas Scott, Howard A. Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 71, Issue 2-6 https://doi.org/10.1016/S0022-4073(01)00109-1	journal	October 2001
Advances in NLTE modeling for integrated simulations Scott, H. A.; Hansen, S. B. High Energy Density Physics, Vol. 6, Issue 1 https://doi.org/10.1016/j.hedp.2009.07.003	journal	January 2010
Design of short pulse laser driven opacity experiments London, Richard A.; Castor, John I. High Energy Density Physics, Vol. 9, Issue 4 https://doi.org/10.1016/j.hedp.2013.07.003	journal	December 2013
Modelling K shell spectra from short pulse heated buried microdot targets Hoarty, D. J.; Sircombe, N.; Beiersdorfer, P. High Energy Density Physics, Vol. 23 https://doi.org/10.1016/j.hedp.2017.04.004	journal	June 2017
An automated design process for short pulse laser driven opacity experiments Martin, M. E.; London, R. A.; Goluoglu, S. High Energy Density Physics, Vol. 26 https://doi.org/10.1016/j.hedp.2017.12.001	journal	March 2018
A higher-than-predicted measurement of iron opacity at solar interior temperatures Bailey, J. E.; Nagayama, T.; Loisel, G. P. Nature, Vol. 517, Issue 7532 https://doi.org/10.1038/nature14048	journal	December 2014
Three-dimensional HYDRA simulations of National Ignition Facility targets Marinak, M. M.; Kerbel, G. D.; Gentile, N. A. Physics of Plasmas, Vol. 8, Issue 5 https://doi.org/10.1063/1.1356740	journal	May 2001
Pulsed-power-driven high energy density physics and inertial confinement fusion research Matzen, M. Keith; Sweeney, M. A.; Adams, R. G. Physics of Plasmas, Vol. 12, Issue 5 https://doi.org/10.1063/1.1891746	journal	May 2005
Measurements of fast electron scaling generated by petawatt laser systems Tanimoto, Tsuyoshi; Habara, H.; Kodama, R. Physics of Plasmas, Vol. 16, Issue 6 https://doi.org/10.1063/1.3155086	journal	June 2009
Electron temperature and density characterization using L-shell spectroscopy of laser irradiated buried iron layer targets Shahzad, M.; Tallents, G. J.; Steel, A. B. Physics of Plasmas, Vol. 21, Issue 8 https://doi.org/10.1063/1.4892263	journal	August 2014
Computational design of short pulse laser driven iron opacity experiments Martin, M. E.; London, R. A.; Goluoglu, S. Physics of Plasmas, Vol. 24, Issue 2 https://doi.org/10.1063/1.4976710	journal	February 2017
Comprehensive description of the Orion laser facility Hopps, Nicholas; Oades, Kevin; Andrew, Jim Plasma Physics and Controlled Fusion, Vol. 57, Issue 6 https://doi.org/10.1088/0741-3335/57/6/064002	journal	April 2015
Integrated calculations of short-pulse laser interactions with matter Sircombe, N. J.; Hughes, S. J.; Ramsay, M. G. New Journal of Physics, Vol. 15, Issue 2 https://doi.org/10.1088/1367-2630/15/2/025025	journal	February 2013
National Ignition Facility laser performance status Haynam, C. A.; Wegner, P. J.; Auerbach, J. M. Applied Optics, Vol. 46, Issue 16 https://doi.org/10.1364/AO.46.003276	journal	January 2007

Similar Records

Computational design of short pulse laser driven iron opacity experiments

Journal Article · Wed Feb 22 23:00:00 EST 2017 · Physics of Plasmas · OSTI ID:1345340

An automated design process for short pulse laser driven opacity experiments

Journal Article · Wed Dec 20 23:00:00 EST 2017 · High Energy Density Physics · OSTI ID:1432970

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
74 ATOMIC AND MOLECULAR PHYSICS
Orion
astronomical objects
computational models
equations of state
hydrodynamics simulations
lasers
plasma properties and parameters

Two-dimensional parametric design of short pulse laser driven iron opacity experiments

Citation Formats

References (14)

Similar Records

Related Subjects