Tamper asymmetry and its effect on transmission for x-ray driven opacity simulations

Morris, H. E.; Tregillis, I. L.; Hoffman, N. M.; Sherrill, M. E.; Fontes, C. J.; Marshall, A. J.; Urbatsch, T. J.; Bradley, P. A.

doi:10.1063/1.4994062

Title: Tamper asymmetry and its effect on transmission for x-ray driven opacity simulations

Journal Article · Tue Aug 01 00:00:00 EDT 2017 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4994062· OSTI ID:1402644

^[1]; Tregillis, I. L. ^[1];

^[1]; Sherrill, M. E. ^[1]; Fontes, C. J. ^[1]; Marshall, A. J. ^[1]; Urbatsch, T. J. ^[1];

^[1]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

This paper reports on synthetic transmission results from Lasnex [1] radiation-hydrodynamics simulations of opacity experiments carried out at Sandia National Laboratories' recently upgraded ZR facility. The focus is on experiments utilizing disk targets composed of a half-moon Fe/Mg mixture tamped on either end with 10- m CH and an additional 35- m beryllium tamper accessory on the end facing the spectrometer. Five x-ray sources with peak power ranging from 10 to 24 TW were used in the simulations to heat and backlight the opacity target. The dominant effect is that the beryllium behind the Fe/Mg mixture is denser and more opaque than the beryllium unshielded by metal during the times of greatest importance for the transmission measurement for all drives. This causes the simulated transmission to be lower than expected, and this is most pronounced for the case using the lowest drive power. While beryllium has a low opacity, its areal density is sufficiently high such that the expected reduction of the measured transmission is significant. This situation leads to an overestimate of iron opacity by 10-215% for a photon energy range of 975- 1775 eV for the 10-TW case. It is shown that if the tamper conditions are known, the transmission through each component of the target can be calculated and the resulting opacity can be corrected.

View Accepted Manuscript (DOE)

View Accepted Manuscript (Publisher)

Cite

Export

Save

Research Organization:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-06NA25396

OSTI ID:: 1402644

Alternate ID(s):: OSTI ID: 1380048

Report Number(s):: LA-UR-17-25291; TRN: US1703119

Journal Information:: Physics of Plasmas, Vol. 24, Issue 9; ISSN 1070-664X

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

Country of Publication:: United States

Language:: English

Citation Metrics:

Cited by: 1 work

Citation information provided by
Web of Science

References (25)

Design of dynamic Hohlraum opacity samples to increase measured sample density on Z Nash, T. J.; Rochau, G. A.; Bailey, J. E. Review of Scientific Instruments, Vol. 81, Issue 10 https://doi.org/10.1063/1.3483230	journal	October 2010
HELIOS-CR – A 1-D radiation-magnetohydrodynamics code with inline atomic kinetics modeling MacFarlane, J. J.; Golovkin, I. E.; Woodruff, P. R. Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 99, Issue 1-3 https://doi.org/10.1016/j.jqsrt.2005.05.031	journal	May 2006
An equation of state for partially ionized plasmas: The Coulomb contribution to the free energy Kilcrease, D. P.; Colgan, J.; Hakel, P. High Energy Density Physics, Vol. 16 https://doi.org/10.1016/j.hedp.2015.05.005	journal	September 2015
Amplitude reduction of nonuniformities induced by magnetic Rayleigh–Taylor instabilities in Z-pinch dynamic hohlraums Lemke, R. W.; Bailey, J. E.; Chandler, G. A. Physics of Plasmas, Vol. 12, Issue 1 https://doi.org/10.1063/1.1819936	journal	January 2005
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
The Chemical Composition of the Sun Asplund, Martin; Grevesse, Nicolas; Sauval, A. Jacques Annual Review of Astronomy and Astrophysics, Vol. 47, Issue 1 https://doi.org/10.1146/annurev.astro.46.060407.145222	journal	September 2009
Experimental investigation of opacity models for stellar interior, inertial fusion, and high energy density plasmas Bailey, J. E.; Rochau, G. A.; Mancini, R. C. Physics of Plasmas, Vol. 16, Issue 5 https://doi.org/10.1063/1.3089604	journal	May 2009
The new Los Alamos opacity code ATOMIC Hakel, P.; Sherrill, M. E.; Mazevet, S. Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 99, Issue 1-3 https://doi.org/10.1016/j.jqsrt.2005.04.007	journal	May 2006
Overview of the Dynamic Hohlraum X-Ray Source at Sandia National Laboratories Sanford, Thomas W. L. IEEE Transactions on Plasma Science, Vol. 36, Issue 1 https://doi.org/10.1109/TPS.2007.914165	journal	January 2008
Implications of high-energy photons and electrons on target preheat at the Sandia “Z” facility Derzon, M.; Nash, T.; Chandler, G. Review of Scientific Instruments, Vol. 70, Issue 1 https://doi.org/10.1063/1.1149445	journal	January 1999
Measurements of opacity and temperature of warm dense matter heated by focused soft X-ray laser irradiation Tallents, G. J.; Booth, N.; Edwards, M. H. High Energy Density Physics, Vol. 5, Issue 1-2 https://doi.org/10.1016/j.hedp.2009.03.006	journal	June 2009
Wire number breakthrough for high-power annular z pinches and some characteristics at high wire number Sanford, T. W. L. Laser and Particle Beams, Vol. 19, Issue 4 https://doi.org/10.1017/S0263034601194036	journal	October 2001
Calibrated simulations of $Z$ opacity experiments that reproduce the experimentally measured plasma conditions Nagayama, T.; Bailey, J. E.; Loisel, G. Physical Review E, Vol. 93, Issue 2 https://doi.org/10.1103/PhysRevE.93.023202	journal	February 2016
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
Iron-Plasma Transmission Measurements at Temperatures Above 150 eV Bailey, J. E.; Rochau, G. A.; Iglesias, C. A. Physical Review Letters, Vol. 99, Issue 26 https://doi.org/10.1103/PhysRevLett.99.265002	journal	December 2007
A new Generation of los Alamos Opacity Tables Colgan, J.; Kilcrease, D. P.; Magee, N. H. The Astrophysical Journal, Vol. 817, Issue 2 https://doi.org/10.3847/0004-637X/817/2/116	journal	January 2016
The Los Alamos suite of relativistic atomic physics codes Fontes, C. J.; Zhang, H. L.; Jr, J. Abdallah Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 48, Issue 14 https://doi.org/10.1088/0953-4075/48/14/144014	journal	May 2015
The RAGE radiation-hydrodynamic code Gittings, Michael; Weaver, Robert; Clover, Michael Computational Science & Discovery, Vol. 1, Issue 1 https://doi.org/10.1088/1749-4699/1/1/015005	journal	October 2008
Progress towards a more predictive model for hohlraum radiation drive and symmetry Jones, O. S.; Suter, L. J.; Scott, H. A. Physics of Plasmas, Vol. 24, Issue 5 https://doi.org/10.1063/1.4982693	journal	May 2017
Los Alamos Opacities: Transition from LEDCOP to ATOMIC Magee, N. H. ATOMIC PROCESSES IN PLASMAS: 14th APS Topical Conference on Atomic Processes in Plasmas, AIP Conference Proceedings https://doi.org/10.1063/1.1824868	conference	January 2004
Large Enhancement in High-Energy Photoionization of Fe XVII and Missing Continuum Plasma Opacity Nahar, Sultana N.; Pradhan, Anil K. Physical Review Letters, Vol. 116, Issue 23 https://doi.org/10.1103/PhysRevLett.116.235003	journal	June 2016
Diagnostics on Z (invited) Nash, T. J.; Derzon, M. S.; Chandler, G. A. Review of Scientific Instruments, Vol. 72, Issue 1 https://doi.org/10.1063/1.1322618	journal	January 2001
Sound speed and oscillation frequencies for solar models evolved with Los Alamos ATOMIC opacities Guzik, Joyce A.; Fontes, C. J.; Walczak, P. Proceedings of the International Astronomical Union, Vol. 11, Issue A29B https://doi.org/10.1017/S1743921316006062	journal	August 2015
Dynamics and characteristics of a 215-eV dynamic-hohlraum x-ray source on Z Sanford, T. W. L.; Lemke, R. W.; Mock, R. C. Physics of Plasmas, Vol. 9, Issue 8 https://doi.org/10.1063/1.1489676	journal	August 2002
Dynamics of a Z-pinch x-ray source for heating inertial-confinement-fusion relevant hohlraums to 120–160 eV Sanford, T. W. L.; Olson, R. E.; Mock, R. C. Physics of Plasmas, Vol. 7, Issue 11 https://doi.org/10.1063/1.1316087	journal	November 2000

Cited By (1)

Hohlraum modeling for opacity experiments on the National Ignition Facility Dodd, E. S.; DeVolder, B. G.; Martin, M. E. Physics of Plasmas, Vol. 25, Issue 6 https://doi.org/10.1063/1.5026285	journal	June 2018

Similar Records

Diagnosis of x-ray heated Mg/Fe opacity research plasmas

Journal Article · Sat Nov 15 00:00:00 EST 2008 · Review of Scientific Instruments · OSTI ID:1402644

Bailey, J E; Rochau, G A; Chandler, G A; +12 more

Experimental Investigation of Iron Plasma Opacity Models

Journal Article · Thu Sep 10 00:00:00 EDT 2009 · AIP Conference Proceedings · OSTI ID:1402644

Bailey, J E; Rochau, G A; Hansen, S B; +16 more

Numerical investigations of potential systematic uncertainties in iron opacity measurements at solar interior temperatures

Journal Article · Mon Jun 26 00:00:00 EDT 2017 · Physical Review E · OSTI ID:1402644

Nagayama, T.; Bailey, J. E.; Loisel, G. P.; +3 more

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Title: Tamper asymmetry and its effect on transmission for x-ray driven opacity simulations

Citation Formats

References (25)

Cited By (1)

Similar Records

Related Subjects