Power-law scaling of plasma pressure on laser-ablated tin microdroplets
| Autor: | M. M. Basko, Jim C. Visschers, Ruben Schupp, Ronnie Hoekstra, Francesco Torretti, Wim Ubachs, Oscar Versolato, Joris Scheers, Dmitrii Andreevich Kim, Dmitry Kurilovich |
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| Přispěvatelé: | Quantum interactions and structural dynamics, Atoms, Molecules, Lasers, LaserLaB - Physics of Light |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
FOS: Physical sciences
Atmospheric-pressure plasma 01 natural sciences Power law TARGET ATOMIC-NUMBER WAVELENGTH 010305 fluids & plasmas law.invention law 0103 physical sciences Radiative transfer EQUATION SDG 7 - Affordable and Clean Energy 010306 general physics Scaling Physics Laser ablation INTENSITY Plasma DRIVEN Condensed Matter Physics Laser Threshold energy Physics - Plasma Physics Computational physics Plasma Physics (physics.plasm-ph) LIGHT HIGH-TEMPERATURE RADIATION |
| Zdroj: | Kurilovich, D, Basko, M M, Kim, D A, Torretti, F, Schupp, R, Visschers, J C, Scheers, J, Hoekstra, R, Ubachs, W & Versolato, O O 2018, ' Power-law scaling of plasma pressure on laser-ablated tin microdroplets ', Physics of Plasmas, vol. 25, no. 1, 012709, pp. 012709 . https://doi.org/10.1063/1.5010899 Physics of Plasmas Physics of plasmas, 25(1):012709. AMER INST PHYSICS Physics of Plasmas, 25(1):012709. American Institute of Physics Publising LLC |
| ISSN: | 1070-664X |
| Popis: | The measurement of the propulsion of metallic microdroplets exposed to nanosecond laser pulses provides an elegant method for probing the ablation pressure in dense laser-produced plasma. We present the measurements of the propulsion velocity over three decades in the driving Nd:YAG laser pulse energy, and observe a near-perfect power law dependence. Simulations performed with the RALEF-2D radiation-hydrodynamic code are shown to be in good agreement with the power law above a specific threshold energy. The simulations highlight the importance of radiative losses which significantly modify the power of the pressure scaling. Having found a good agreement between the experiment and the simulations, we investigate the analytic origins of the obtained power law and conclude that none of the available analytic theories is directly applicable for explaining our power exponent. Comment: 11 pages, 8 figures |
| Databáze: | OpenAIRE |
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