Controlling the energy distribution of accelerated particles by choosing the relief parameters of the target irradiated by a short laser pulse of relativistic intensity

M. V. Sedov, K. Y. Platonov, A. A. Andreev

Research output

Abstract

Secondary emission from laser produced plasma is governed by the electron distribution function. Therefore, its control is of utmost importance to steer the emission e.g. of ultra-short bursts of high energy photons and ions for decisive application. In our theoretical analysis including comparison to recent experiments we follow this route and study how the energy is transferred from short laser pulse to the energy of fast ions and X-rays. We make use of ion and Kα emission which respond differently to branches of the electron distribution function when we optimize the laser light absorption via structuring of the target surface. Our investigation comprises laser intensities up to 5×1020 W/cm2 produced with femtosecond near infrared laser pulses and Titanium foil targets of a few micrometer thicknesses. In particular, we reveal an energy relaxation process of hot electrons, which determines the observed laser intensity dependence of secondary emission and points to the benefit of target surface structuring in different optimization scenarios.

Original languageEnglish
Title of host publicationProceedings of the International Conference on Advances and Applications in Plasma Physics, AAPP 2019
EditorsMichael Tendler, Vladimir Rozhansky, Pavel Goncharov, Anna Kravchuk
PublisherAmerican Institute of Physics
ISBN (Electronic)9780735419261
DOIs
Publication statusPublished - 26 Nov 2019
Event1st International Conference on Advances and Applications in Plasma Physics, AAPP 2019 - St. Petersburg
Duration: 18 Sep 201920 Sep 2019

Publication series

NameAIP Conference Proceedings
Volume2179
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference1st International Conference on Advances and Applications in Plasma Physics, AAPP 2019
CountryRussian Federation
CitySt. Petersburg
Period18/09/1920/09/19

Scopus subject areas

  • Physics and Astronomy(all)

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