@article{90935f58f08e4afca69a223b9d5cf7b0,
title = "High resolution X-ray spectra of stainless steel foils irradiated by femtosecond laser pulses with ultra-relativistic intensities",
abstract = "We report on the spectra of x-rays emitted from dense plasma generated via irradiation of thin stainless steel foils by ultra-relativistic femtosecond laser pulses (intensities ~3 × 1021 W/cm2). Kinetic modelling was used to estimate electron plasma density and temperature, demonstrating Te ~2.1 keV for Ne ~5 × 1022 cm−3 in the hottest emission region. Thus, it is experimentally demonstrated for the first time that the laser pulse of over 1021 W/cm2 intensity is absorbed neither in the solid density plasma nor in a pre-plasma of a common critical density, but in the matter of so called relativistic critical density.",
author = "Alkhimova, {M. A.} and Faenov, {A. Ya} and Skobelev, {I. Y.U.} and Pikuz, {T. A.} and M. Nishiuchi and H. Sakaki and Pirozhkov, {A. S.} and A. Sagisaka and Dover, {N. P.} and Kondo, {K. O.} and K. Ogura and Y. Fukuda and H. Kiriyama and K. Nishitani and T. Miyahara and Y. Watanabe and Pikuz, {S. A.} and M. Kando and R. Kodama and Kondo, {And K.}",
note = "Funding Information: Russian Science Foundation (RSF) (17-72-20272); Japanese Ministry of Education, Culture, Sports, Science and Technology (Supplemental budget, C-PhoST); Japan Society for the Promotion of Science (JSPS) (KAKENHI JP 26707031, 26247100, 16K05506); Japan Science and Technology Agency (PRESTO JPMJPR16P9 6813804). Publisher Copyright: {\textcopyright} 2017 Optical Society of America under the terms of the OSA Open Access Publishing Agreement.",
year = "2017",
month = nov,
day = "13",
doi = "10.1364/OE.25.029501",
language = "English",
volume = "25",
pages = "29501--29511",
journal = "Optics Express",
issn = "1094-4087",
publisher = "The Optical Society",
number = "23",
}