Ultrahigh-Pressure Laser-Driven Shock-Wave Experiments in Aluminum

Trainor, R.J.; Shaner, J. W.; Auerbach, Jerome M.; Holmes, N. C.

doi:10.1103/physrevlett.42.1154

Cited by 181 publications

(50 citation statements)

References 5 publications

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“…The shock is generated by the ablation pressure from the expanding plasma from a planar target [12,13]. Since it is the ablation which drives the pressure pulse the laser beam does not need to be normal to the sample surface.…”

Section: X-ray Diffraction During Shock Compression In Laser Based Symentioning

confidence: 99%

In-Situ Probing of Lattice Response in Shock Compressed Materials Using X-Ray Diffraction

Hawreliak¹,

Butterfield²,

Davies³

et al. 2008

AIP Conference Proceedings

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Abstract. Lattice level measurements of material response under extreme conditions are required to build a phenomenological understanding of the shock response of solids. We have successfully used laser produced plasma x-ray sources coincident with laser driven shock waves to make in-situ measurements of the lattice response during shock compression for both single crystal and polycrystalline materials. Using a detailed analysis of shocked single crystal iron which has undergone the α − ε phase transition we can constrain the transition mechanism to be consistent with a compression and shuffle of alternate lattice planes.

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Section: X-ray Diffraction During Shock Compression In Laser Based Symentioning

confidence: 99%

In-Situ Probing of Lattice Response in Shock Compressed Materials Using X-Ray Diffraction

Hawreliak¹,

Butterfield²,

Davies³

et al. 2008

AIP Conference Proceedings

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“…Measurements of the rear-surface luminous emission [4,5,6,7], reflectivity [8] and phase shifts [9] al-.. ,. ,.. low one to determine shock speed.…”

Section: Experimental Techniquesmentioning

confidence: 99%

Ultrashort x-ray backlighters and applications

1997

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Previously, using ultrashort laser pulses focused onto solid targets, we have experimentally studied a controllable ultrafast broadband radiation source in the extreme ultraviolet for time-resolved dynamical studies in ultrafast science [J. Workman, A. Maksimchuk, X. Llu, U. Ellenberger, J. S. Coe, C.-Y. Chien, and D. Umstadter, "Control of Bright Picosecond X-Ray Emission from Intense Sub-Picosecond Laser-Plasma Interactions," Phys. Rev. Lett. 75, 2324Lett. 75, (1995]. Once armed with a bright ultrafa.st broadband continuum x-ray source and appropriate detectors, we used the source as a backlighter to study a remotely produced plasma. The application of the source to a problem relevant to high-density matter completes the triad: creating and controlling, efficiently detecting, and applying the source. This work represented the first use of an ult rafast laser-produced x-ray source as a time-resolving probe in an application relevant to atomic, plasma and high-energy-density matter physics. Using the x-ray source as a backlighter, we adopted a pump-probe geometry to investigate the dynamic changes in electronic stucture of a thin metallic film as it is perturbed by an ultrashort laser pulse. Because the laser deposits its energy in a skin depth of about 100~before expansion occurs, up to gigabar pressure shock waves lasting picosecond in duration have been predicted to form in these novel plasmas. This raises the possibility of studying high-energy-density matter relevant to inertial confinement fusion (ICF) and astrophysics in small-scale laboratory experiments. In the past, time-resolved measurements of K-edge shifts in plasmas driven by nanosecond pulses have been used to infer conditions in highly compressed materials. In this study, we used 100-fs laser pulses to impulsively drive shocks into a sample (an untamped 1000~aluminum film on 2000~of parylene-n), measuring L-edge shifts. 2.". , .'

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“…For the case of the very rapid acceleration to 45 high velocities that can be encountered in ablative acceleration or shocks 5 produced by high power lasers, the use of interferometric velocimeters requires the availability of very fast >>1 GHz detectors capable of measuring the rapid fringe shifts produced. For the velocimeter discussed herein, the wavelength shifts of the reflected probe laser light are measured rather than the phase shifts.…”

Section: Doppler Velocimeter For Laser Accelerated Targetsmentioning

confidence: 99%

Doppler velocimeter for laser accelerated targets

Obenschain

McLean

Gold

1980

Review of Scientific Instruments

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A doppler velocimeter utilizing a spectrograph and a short-pulse laser probe is described which provides good spatial (20 μm) and subnanosecond temporal resolution. This system has been used to measure the velocity profiles of targets ablatively accelerated to very high velocities by a high-power laser beam. In comparison to systems employing interferometric techniques, this velocimeter significantly relaxes requirements on the target surface being examined and the time resolution needed to measure velocities of rapidly accelerating surfaces.

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Ultrahigh-Pressure Laser-Driven Shock-Wave Experiments in Aluminum

Cited by 181 publications

References 5 publications

In-Situ Probing of Lattice Response in Shock Compressed Materials Using X-Ray Diffraction

In-Situ Probing of Lattice Response in Shock Compressed Materials Using X-Ray Diffraction

Ultrashort x-ray backlighters and applications

Doppler velocimeter for laser accelerated targets

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