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.; Gartside, L M R; Whittaker, D. S.; Zhai, Zhen; Rus, B.; Mocek, Tomáš; Kozlová, M.; Polan, J.; Homer, P.

doi:10.1016/j.hedp.2009.03.006

Cited by 6 publications

(2 citation statements)

References 8 publications

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“…WDM states can be achieved by several other means, e.g. X-ray heating (Tallents et al, 2009) and shock compression (Kritcher et al, 2008). However, when studying fundamental properties of WDM, such as equation of state or opacity, it is desirable to generate large volumes of uniformly heated material; ion beams, which can heat the material in depth, are in principle better suited to this purpose than the methods described above.…”

Section: B Production Of Warm Dense Mattermentioning

confidence: 99%

Ion acceleration by superintense laser-plasma interaction

2013

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Ion acceleration driven by superintense laser pulses is attracting an impressive and steadily increasing\ud effort. Motivations can be found in the applicative potential and in the perspective to investigate novel regimes as available laser intensitieswill be increasing. Experiments have demonstrated, over a wide range\ud of laser and target parameters, the generation of multi-MeV proton and ion beams with unique properties\ud suchas ultrashort duration, high brilliance, and low emittance. An overview is given of the state of the art of\ud ion acceleration by laser pulses aswell as an outlook on its future development and perspectives.The main\ud features observed in the experiments, the observed scaling with laser and plasma parameters, and the main\ud models used both to interpret experimental data and to suggest new research directions are described

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Section: B Production Of Warm Dense Mattermentioning

confidence: 99%

Ion acceleration by superintense laser-plasma interaction

2013

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“…Applications for such lasers are developing (for example, Edwards et al, 2006Edwards et al, , 2007Kuehl et al, 2007;Neumayer et al, 2005;Purvis et al, 2007;Tallents et al, 2009;Ziaja et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

The output of a laser amplifier with simultaneous amplified spontaneous emission and an injected seed

Huang

Tallents

2009

Laser Part. Beams

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The minimum irradiance needed to overcome amplified spontaneous emission (ASE) of a seed beam injected into a laser amplifier is evaluated. The treatment is particularly applicable to extreme ultraviolet (EUV) and X-ray laser schemes to inject laser harmonic radiation as a seed into (1) plasma laser amplifiers and (2) free-electron lasers. Simple expressions and calculations are given for the minimum injected irradiance required for amplification of the injected seed beam to exceed ASE from the amplifier, including the effects of gain saturation, assuming one dimensional radiative transfer.

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

et al. 2017

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This paper reports on synthetic transmission results from Lasnex [Zimmerman and Kruer, Comments Plasma Phys. 2, 51 (1975)] 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-μm CH and an additional 35-μm 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.

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Measurements of opacity and temperature of warm dense matter heated by focused soft X-ray laser irradiation

Cited by 6 publications

References 8 publications

Ion acceleration by superintense laser-plasma interaction

Ion acceleration by superintense laser-plasma interaction

The output of a laser amplifier with simultaneous amplified spontaneous emission and an injected seed

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

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