Target expansion modelling for problems of laser ion acceleration optimization
Rakitina M. A. 1, Brantov A. V.1, Glazyrin S. I.1,2
1Lebedev Physical Institute, Russian Academy of Sciences, Moscow, Russia
2Dukhov All-Russia Research Institute of Automatics, Moscow, Russia
Email: rakitinama@lebedev.ru, brantovav@lebedev.ru, glazyrin@itep.ru

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At present, a significant part of experiments on the interaction of high-power short laser pulses with solid targets is faced with the problem of target modification under the action of a nanosecond prepulse. In this paper, a series of hydrodynamic calculations of target irradiation with a nanosecond laser pulse is performed, which describes the plasma density profiles arising during the target expansion as a function of the parameters of the laser prepulse/additional pulse. The results obtained can make it possible to improve the efficiency of ion acceleration in the interaction of short laser pulses with a profiled plasma target. Keywords: preplasma, laser-plasma interaction, plasma expansion, laser ion acceleration. DOI: 10.61011/EOS.2023.02.55782.20-23
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