Role of relativistic laser intensity on Isochoric heating of metal wire targets

TY - JOUR

T1 - Role of relativistic laser intensity on Isochoric heating of metal wire targets

AU - Martynenko, A. S.

AU - Pikuz, S. A.

AU - Antonelli, L.

AU - Barbato, F.

AU - Boutoux, G.

AU - Giuffrida, L.

AU - Honrubia, J. J.

AU - Hume, E.

AU - Jacoby, J.

AU - Khaghani, D.

AU - Lancaster, K.

AU - Neumayer, P.

AU - Rosmej, O. N.

AU - Santos, J. J.

AU - Turianska, O.

AU - Batani, D.

N1 - Funding Information: Ministry of Science and Higher Education of the Russian Federation (075 15 2020 785); H2020 Euratom (633053, ENR-IFE19.CEA-01). We would like to acknowledge the support from the PHELIX laser team. The work of JIHT RAS team was supported by The Ministry of Science and Higher Education of the Russian Federation (Agreement with Joint Institute for High Temperatures RAS No 075 15 2020 785). This work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom research and training programme 2014-2018 and 2019-2020 under grant agreement No 633053. The views and opinions expressed herein do not necessarily reflect those of the European Commission. The involved teams have operated within the framework of the Enabling Research Project: ENR-IFE19.CEA-01 ?Study of Direct Drive and Shock Ignition for IFE: Theory, Simulations, Experiments, Diagnostics development?. Funding Information: Acknowledgments. We would like to acknowledge the support from the PHELIX laser team. The work of JIHT RAS team was supported by The Ministry of Science and Higher Education of the Russian Federation (Agreement with Joint Institute for High Temperatures RAS No 075 15 2020 785). This work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom research and training programme 2014-2018 and 2019-2020 under grant agreement No 633053. The views and opinions expressed herein do not necessarily reflect those of the European Commission. The involved teams have operated within the framework of the Enabling Research Project: ENR-IFE19.CEA-01 «Study of Direct Drive and Shock Ignition for IFE: Theory, Simulations, Experiments, Diagnostics development». © 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

PY - 2021/4/12

Y1 - 2021/4/12

N2 - In a recent experimental campaign, we used laser-accelerated relativistic hot electrons to ensure heating of thin titanium wire targets up to a warm dense matter (WDM) state [EPL 114, 45002 (2016)]. The WDM temperature profiles along several hundred microns of the wire were inferred by using spatially resolved X-ray emission spectroscopy looking at the Ti Kα characteristic lines. A maximum temperature of ∼30 eV was reached. Our study extends this work by discussing the influence of the laser parameters on temperature profiles and the optimisation of WDM wire-based generation. The depth of wire heating may reach several hundreds of microns and it is proven to be strictly dependent on the laser intensity. At the same time, it is quantitatively demonstrated that the maximum WDM temperature doesn’t appear to be sensitive to the laser intensity and mainly depends on the deposited laser energy considering ranges of 6×1018–6×1020 W/cm2 and 50–200 J.

AB - In a recent experimental campaign, we used laser-accelerated relativistic hot electrons to ensure heating of thin titanium wire targets up to a warm dense matter (WDM) state [EPL 114, 45002 (2016)]. The WDM temperature profiles along several hundred microns of the wire were inferred by using spatially resolved X-ray emission spectroscopy looking at the Ti Kα characteristic lines. A maximum temperature of ∼30 eV was reached. Our study extends this work by discussing the influence of the laser parameters on temperature profiles and the optimisation of WDM wire-based generation. The depth of wire heating may reach several hundreds of microns and it is proven to be strictly dependent on the laser intensity. At the same time, it is quantitatively demonstrated that the maximum WDM temperature doesn’t appear to be sensitive to the laser intensity and mainly depends on the deposited laser energy considering ranges of 6×1018–6×1020 W/cm2 and 50–200 J.

UR - http://www.scopus.com/inward/record.url?scp=85104461326&partnerID=8YFLogxK

U2 - 10.1364/OE.415091

DO - 10.1364/OE.415091

M3 - Article

C2 - 33984988

AN - SCOPUS:85104461326

SN - 1094-4087

VL - 29

SP - 12240

EP - 12251

JO - Optics Express

JF - Optics Express

IS - 8

ER -