Formation of a supersonic laser-driven plasma jet in a cylindrical channel

Badziak, J.; Pisarczyk, T.; Chodukowski, T.; Kasperczuk, A.; Parys, P.; Rosiński, M.; Wołowski, J.; Krouský, E.; Krása, J.; Mašek, K.; Pfeifer, M.; Skála, J.; Ullschmied, J.; Velyhan, A.; Dhareshwar, L. J.; Gupta, Nidhi; Rhee, Yongjoo; Torrisi, L.; Pisarczyk, P.

doi:10.1063/1.3270520

Cited by 10 publications

(6 citation statements)

References 16 publications

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“…Simplicity and reliability of the PALS single-beam jet generation enabled experiments ranking from laboratory astrophysics (Nicolai et al, 2009) to fusion related research (Badziak et al, 2009). Due to unusual features of the observed jets, the influence of different phenomena such as magnetic field (Nicolai et al, 2006), radiative cooling (Nicolai et al, 2006), nonlinear laser-plasma interaction (Kasperczuk et al, 2006), and the laser beam profile (Kasperczuk et al, 2009) have been considered as the primary cause of the jet formation.…”

Section: Introductionmentioning

confidence: 99%

Modeling of annular-laser-beam-driven plasma jets from massive planar targets

et al. 2012

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Production of sharply collimated high velocity outflows – plasma jets from massive planar targets by a single laser beam at PALS facility is clarified via numerical simulations. Since only a few experimental data on the intensity distribution in the interaction beam near the focus are available for the PALS facility, the laser beam profile was calculated by a numerical model of the laser system and the interaction optics. The obtained intensity profiles are used as the input for plasma dynamic simulations by our cylindrical two-dimensional fluid code PALE. Jet formation due to laser intensity profile with a minimum on the axis is demonstrated. The outflow collimation improves significantly for heavier elements, even when radiative cooling is omitted. Using an optimized interaction beam profile, a homogeneous jet with a length exceeding its diameter by several times may be reliably generated for applications in laboratory astrophysics and impact ignition studies.

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Section: Introductionmentioning

confidence: 99%

Modeling of annular-laser-beam-driven plasma jets from massive planar targets

et al. 2012

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“…6), which means that the average plasma velocity in the channel is <v> ~ (1.5 -2) ×10 7 cm/s. This velocity was found to be comparable to the velocity of a plasma jet of relatively low electron density (~10 18 -10 20 cm -3 ) observed at the channel output in the AA scheme [13]. However, contrary to the AA case, such a plasma jet was not recorded in the LICPA scheme.…”

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confidence: 69%

“…We have observed that in the case of employing LICPA without the channel, a very shallow crater or no crater was produced in the Al target placed at distances from the CH foil comparable to the channel length (1or 2mm). It indicates that in such a case the energy accumulated in the cavity is finally dispersed in a large angle like in the case of using AA for the foil acceleration in free space [13] .…”

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confidence: 99%

Highly efficient acceleration and collimation of high-density plasma using laser-induced cavity pressure

Badziak

Borodziuk

Pisarczyk

et al. 2010

Applied Physics Letters

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A novel efficient scheme of acceleration and collimation of dense plasma is proposed and examined. In the proposed scheme, a target placed in a cavity at the entrance of a guiding channel is irradiated by a laser beam introduced into the cavity through a hole and accelerated along the channel by the pressure created and accumulated in the cavity by the hot plasma expanding from the target and the cavity walls. Using 1.315-µm, 0.3-ns laser pulse of energy up to 200J and a thin CH target, it was shown that the forward accelerated dense plasma projectile produced from the target can be effectively guided and collimated in the 2-mm cylindrical guiding channel and the energetic efficiency of acceleration in this scheme is an order of magnitude higher than in the case of conventional ablative acceleration.

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“…It is based on irradiation of a flat massive target with atomic number Z ≥ 29 (Z = 29 corresponds to Cu) by a single partly defocused laser beam . Also, recently, we proposed and demonstrated effective formation of a supersonic forward-emitted plasma jet by using a cylindrical channel, which guides and collimates the plasma produced from a laser-irradiated thin-foil target (Badziak et al, 2009). Recently, our investigations of the mechanisms of the plasma jet creation (Kasperczuk et al, 2009a) have shown that the geometry of target irradiation is crucial, the annular target irradiation being necessary for plasma jet formation.…”

Section: Introductionmentioning

confidence: 99%

Interaction of two plasma jets produced successively from Cu target

et al. 2010

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Our earlier papers demonstrate a very simple method of plasma jet formation, consisting in irradiating a massive planar target of a relatively high atomic number by a partly defocused laser beam. Our present interest is concentrated on interaction of the plasma jet with other media. This paper is aimed at investigations of interaction of two jets launched successively on Cu target. Our attention was paid to the role of radiative cooling in the plasma jet formation. The experiment was carried out at the PALS iodine laser facility. The laser provided a 250-ps (full width at half maximum) pulse with energy of 130 J at the third harmonic frequency (λ 3 = 0.438 μm). Two successive jets were produced on a massive flat Cu target provided with a cylindrical channel 5 mm long and 400 μm in diameter. Since the focal spot diameter of the laser beam on the target surface was larger than that of the channel (800 μm), the annular irradiation of the target face resulted in creation of the first plasma jet, whereas the second jet was produced by action of the central part of laser beam on the channel wall. Three-frame interferometric system, X-ray streak camera, and a set of ion collectors were used as diagnostic tools.

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Formation of a supersonic laser-driven plasma jet in a cylindrical channel

Cited by 10 publications

References 16 publications

Modeling of annular-laser-beam-driven plasma jets from massive planar targets

Modeling of annular-laser-beam-driven plasma jets from massive planar targets

Highly efficient acceleration and collimation of high-density plasma using laser-induced cavity pressure

Interaction of two plasma jets produced successively from Cu target

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