Laser interaction with undercritical foams of different spatial structures  

作　　者：J.Limpouch V.Tikhonchuk O.Renner Sh.Agarwal T.Burian J.Cervenka J.Dostál R.Dudzák D.Ettel A.Gintrand L.Hudec L.Juha O.Klimo M.Krupka M.Krus T.Lastovicka R.Liska W.Nazarov S.K.Singh M.Šilhavík S.Weber 

机构地区：[1]Faculty of Nuclear Science and Physical Engineering,Czech Technical University in Prague,11519 Prague,Czech Republic [2]The Extreme Light Infrastructure ERIC,ELI-Beamlines Facility,Za Radnicí835,25241 DolníBrezany,Czech Republic [3]Centre Lasers Intenses et Applications,University of Bordeaux-CNRS-CEA,351 Cours de la Liberation,33405 Talence,France [4]Institute of Physics,Czech Academy of Sciences,Na Slovance 1999/2,18200 Prague,Czech Republic [5]Institute of Plasma Physics,Czech Academy of Sciences,18200 Prague,Czech Republic [6]Faculty of Mathematics and Physics,Charles University,12116 Prague,Czech Republic [7]Faculty of Mechatronics,Informatics and Interdisciplinary Studies,Technical University of Liberec,46117 Liberec,Czech Republic [8]Independent Foam Target Supplier,St.Andrews,Fife,Scotland

出　　处：《Matter and Radiation at Extremes》2025年第1期39-47,共9页极端条件下的物质与辐射(英文)

基　　金：supported by the Center of Advanced Applied Sciences(CAAS)Project No.(CZ.02.1.01/0.0/0.0/16019/0000778)from the European Regional Development Fund;also supported in part by the Czech Technical University in Prague Project No.SGS22/184/OHK4/3T/14;partial funding via EUROfusion Enabling Research Project No.AWP24-ENR-03-CEA-02“Foams as a pathway to energy from high gain direct drive ignition,”within the framework of the EUROfusion Consortium,funded by the European Union via the Euratom Research and Training Program(Grant Agreement No.101052200-EUROfusion);the Czech Ministry of Education,Youth and Sports(CMEYS)for funding the operation of the PALS facility(Grant No.LM2023068)。

摘　　要：The interaction of high-power laser pulses with undercritical foams produced by different techniques but with the same average density is studied at the PALS laser facility.The spatial-temporal evolution of X-ray emission is observed using an X-ray streak camera,electron and ion temperatures are measured by X-ray spectroscopy,and hot-electron production is characterized by monochromatic X-ray imaging.Transmission of a femtosecond laser probe pulse through foams is observed in the near and far fields.In spite of large differences in pore size and foam structure,the velocity of ionization front propagation is quite similar for all the foams studied and is slower than that in a homogeneous material of the same average density.The ion temperature in the plasma behind the ionization front is a few times higher than the electron temperature.Hot-electron production in plastic foams with small pores is strongly suppressed compared with that in solid targets,whereas in foams produced by additive manufacturing,it is significantly increased to the level observed in bare copper foil targets.

关 键 词：TEMPERATURE INTERACTION CRITICAL 

分 类 号：TL632.1[核科学技术—核技术及应用]