Hydrodynamics of laser-produced plasma corona measured by optical interferometry

Aliverdiev, A. A.; Batani, D.; Dezulian, R.; Vinci, T.; Benuzzi‐Mounaix, A.; Kœnig, M.; Malka, Victor

doi:10.1088/0741-3335/50/10/105013

Cited by 8 publications

(4 citation statements)

References 19 publications

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“…Nevertheless, hydrodynamic simulations in these conditions are wellbenchmarked and are able to grasp quantitatively the plasma evolution; such procedure of relying on hydrodynamic simulations has indeed been validated quantitatively many times over the years, as shown e.g. in Refs [40,63,64,65,66]. For such simulations, we used the FCI2 hydrodynamic code [67] in 2D, modelling the same xy plane as shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Collimated protons accelerated from an overdense gas jet irradiated by a 1 µm wavelength high-intensity short-pulse laser

Chen

Vranić

Gangolf

et al. 2017

Sci Rep

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We have investigated proton acceleration in the forward direction from a near-critical density hydrogen gas jet target irradiated by a high intensity (1018 W/cm2), short-pulse (5 ps) laser with wavelength of 1.054 μm. We observed the signature of the Collisionless Shock Acceleration mechanism, namely quasi-monoenergetic proton beams with small divergence in addition to the more commonly observed electron-sheath driven proton acceleration. The proton energies we obtained were modest (~MeV), but prospects for improvement are offered through further tailoring the gas jet density profile. Also, we observed that this mechanism is very robust in producing those beams and thus can be considered as a future candidate in laser-driven ion sources driven by the upcoming next generation of multi-PW near-infrared lasers.

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Section: Resultsmentioning

confidence: 99%

Collimated protons accelerated from an overdense gas jet irradiated by a 1 µm wavelength high-intensity short-pulse laser

Chen

Vranić

Gangolf

et al. 2017

Sci Rep

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“…Here we rely on hydrodynamic simulations, using the well characterized ns-duration, low-intensity ASE of the SP, to infer the target density profiles at the time of the SP irradiation; such procedure has indeed been validated quantitatively many times over, as shown e.g. in Refs 41 , 49 – 52 , We can readily see that for thicknesses above 2 µm, the target rear density profiles are steep, which is not favourable for LDCSA to take place 38 . For targets that are thinner, the low-density profiles offer a priori better conditions for LDCSA 38 .…”

Section: Introductionmentioning

confidence: 99%

Acceleration of collimated 45 MeV protons by collisionless shocks driven in low-density, large-scale gradient plasmas by a 1020 W/cm2, 1 µm laser

Antici

Boella

Chen

et al. 2017

Sci Rep

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A new type of proton acceleration stemming from large-scale gradients, low-density targets, irradiated by an intense near-infrared laser is observed. The produced protons are characterized by high-energies (with a broad spectrum), are emitted in a very directional manner, and the process is associated to relaxed laser (no need for high-contrast) and target (no need for ultra-thin or expensive targets) constraints. As such, this process appears quite effective compared to the standard and commonly used Target Normal Sheath Acceleration technique (TNSA), or more exploratory mechanisms like Radiation Pressure Acceleration (RPA). The data are underpinned by 3D numerical simulations which suggest that in these conditions a Low Density Collisionless Shock Acceleration (LDCSA) mechanism is at play, which combines an initial Collisionless Shock Acceleration (CSA) to a boost procured by a TNSA-like sheath field in the downward density ramp of the target, leading to an overall broad spectrum. Experiments performed at a laser intensity of 1020 W/cm2 show that LDCSA can accelerate, from ~1% critical density, mm-scale targets, up to 5 × 109 protons/MeV/sr/J with energies up to 45(±5) MeV in a collimated (~6° half-angle) manner.

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“…MULTI [20], which we recently used in analyzing and interpreting several experimental results related to laser-produced plasmas [21] and extreme states of matter [22]. In order to simulate the experiment with a 2D code, we assumed a large non-uniformity in axial-symmetric approximation, i.e.…”

Section: Analysis and Simulationsmentioning

confidence: 99%

Shock dynamics induced by double-spot laser irradiation of layered targets

et al. 2015

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Abstract. We studied the interaction of a double-spot laser beam with targets using the Prague Asterix Laser System (PALS) iodine laser working at 0.44 m wavelength and intensity of about 10 15 W/cm 2 . Shock breakout signals were recorder using time-resolved self-emission from target rear side of irradiated targets. We compared the behavior of pure Al targets and of targets with a foam layer on the laser side. Results have been simulated using hydrodynamic numerical codes.

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Hydrodynamics of laser-produced plasma corona measured by optical interferometry

Cited by 8 publications

References 19 publications

Collimated protons accelerated from an overdense gas jet irradiated by a 1 µm wavelength high-intensity short-pulse laser

Collimated protons accelerated from an overdense gas jet irradiated by a 1 µm wavelength high-intensity short-pulse laser

Acceleration of collimated 45 MeV protons by collisionless shocks driven in low-density, large-scale gradient plasmas by a 1020 W/cm2, 1 µm laser

Shock dynamics induced by double-spot laser irradiation of layered targets

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