Plasma diagnostics for x-ray driven foils at Z

Heeter, R. F.; Bailey, James E.; Cuneo, M. E.; Emig, J.; Foord, M. E.; Springer, P. T.; Thoe, R. S.

doi:10.1063/1.1324749

Cited by 21 publications

(17 citation statements)

References 20 publications

(6 reference statements)

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“…Both approaches for achieving HED conditions in the laboratory have been developed successfully over the past two decades. Sophisticated time, spatially, and spectrally resolved diagnostics have also been developed ͑Budil et al Boehly et al, 1999;Koch et al, 1999;Heeter et al, 2001;Landen et al, 2001͒. It was only after the deployment of such diagnostics on these facilities that the field of HED laboratory astrophysics has emerged and grown.…”

Section: Introductionmentioning

confidence: 99%

Experimental astrophysics with high power lasers andZpinches

2006

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With the advent of high-energy-density ͑HED͒ experimental facilities, such as high-energy lasers and fast Z-pinch, pulsed-power facilities, millimeter-scale quantities of matter can be placed in extreme states of density, temperature, and/or velocity. This has enabled the emergence of a new class of experimental science, HED laboratory astrophysics, wherein the properties of matter and the processes that occur under extreme astrophysical conditions can be examined in the laboratory. Areas particularly suitable to this class of experimental astrophysics include the study of opacities relevant to stellar interiors, equations of state relevant to planetary interiors, strong shock-driven nonlinear hydrodynamics and radiative dynamics relevant to supernova explosions and subsequent evolution, protostellar jets and high Mach number flows, radiatively driven molecular clouds and nonlinear photoevaporation front dynamics, and photoionized plasmas relevant to accretion disks around compact objects such as black holes and neutron stars.

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Section: Introductionmentioning

confidence: 99%

Experimental astrophysics with high power lasers andZpinches

2006

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“…It is anticipated that such high density, high temperature opacity measurements will be one of the focus areas for experiments on NIF in the future. 59 …”

Section: Opacitiesmentioning

confidence: 99%

“…It was recognized recently that similar conditions of photoionized plasmas could be created in the laboratory using the intense burst of x rays coming from the z-pinch at the SNLA Z-facility. 59 An experiment was developed to measure the photoionized plasma x-ray spectra under nearly scaled conditions. The radiation from the pinch created an 8 ns FWHM, 120 TW, T r = 165 eV near-blackbody radiation source.…”

Section: Photoionized Plasmasmentioning

confidence: 99%

The National Ignition Facility: Ushering in a new age for high energy density science

Moses¹,

Boyd²,

Remington³

et al. 2009

Physics of Plasmas

412

221

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The National Ignition Facility (NIF) [E. I. Moses, J. Phys.: Conf. Ser. 112, 012003 (2008); https://lasers.llnl.gov/], completed in March 2009, is the highest energy laser ever constructed. The high temperatures and densities achievable at NIF will enable a number of experiments in inertial confinement fusion and stockpile stewardship, as well as access to new regimes in a variety of experiments relevant to x-ray astronomy, laser-plasma interactions, hydrodynamic instabilities, nuclear astrophysics, and planetary science. The experiments will impact research on black holes and other accreting objects, the understanding of stellar evolution and explosions, nuclear reactions in dense plasmas relevant to stellar nucleosynthesis, properties of warm dense matter in planetary interiors, molecular cloud dynamics and star formation, and fusion energy generation.

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“…There is a need for calibrated optical streak camera systems [79][80][81][82][83][84][85][86] for use with the EST (Energy, Space, and Time) 1-D imaging system and with slit-imaged timeresolved spectroscopy systems for accurate quantitative measurements of axially-resolved pinch emissions, temperature, and other parameters. It is recommended that several new streak cameras with stable, reliable performance be acquired over the next six years and that the performance of all active streak cameras be checked periodically against specifications by Bechtel-Nevada to verify sweep linearity, system sensitivity, spatial resolution, and other relevant parameters.…”

Section: Iii9 Calibrated Streak Camera Systemsmentioning

confidence: 99%

“…Good examples are: (1) fast ignitor experiments [81], where the maximum density of the compressed fuel occurs within a window of < 2 ns and a precisely-timed petawatt laser pulse must be applied within that window for fuel ignition; (2) x-ray photoionization experiments with thin foils [79], where the desired photoionized plasma equilibrium is achieved only transiently in a 2 ns window; and (3) imploded core x-ray imaging or spectroscopy using a high time resolution gated framing camera or streak camera with an active window of 2 -4 ns. Ideally, timing jitter of 200 ps would be desirable for synchronization of ZR with a petawatt laser and a diagnostic jitter less than 500 ps would be useful for capsule implosion experiments.…”

Section: Iv10 Diagnostic Timingmentioning

confidence: 99%

Diagnostics development plan for ZR.

Hanson¹

2003

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The Z Refurbishment (ZR) Project is a program to upgrade the Z machine at SNL with modern durable pulsed power technology, providing additional shot capacity and improved reliability as well as advanced capabilities for both pulsed x-ray production and high pressure generation. The development of enhanced diagnostic capabilities is an essential requirement for ZR to meet critical mission needs. This report presents a comprehensive plan for diagnostic instrument and infrastructure development for the first few years of ZR operation. The focus of the plan is on: (1) developing diagnostic instruments with high spatial and temporal resolution, capable of low noise operation and survival in the severe EMP, bremsstrahlung, and blast environments of ZR; and (2) providing diagnostic infrastructure improvements, including reduced diagnostic trigger signal jitter, more and flexible diagnostic line-of-sight access, and the capability for efficient exchange of diagnostics with other laboratories. This diagnostic plan is the first step in an extended process to provide enhanced diagnostic capabilities for ZR to meet the diverse programmatic needs of a broad range of defense, energy, and general science programs of an international user community into the next decade. ZR Diagnostics Development Plan ________________________________________________________________________ 4 AcknowledgementsThe author would like to thank

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Plasma diagnostics for x-ray driven foils at Z

Cited by 21 publications

References 20 publications

Experimental astrophysics with high power lasers andZpinches

Experimental astrophysics with high power lasers andZpinches

The National Ignition Facility: Ushering in a new age for high energy density science

Diagnostics development plan for ZR.

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