title: Density and temperature characterization of long-scale length, near-critical density controlled plasma produced from ultra-low density plastic foam.
abstract: The ability to produce long-scale length (i.e. millimeter scale-length), homogeneous plasmas is of interest in studying a wide range of fundamental plasma processes. We present here a validated experimental platform to create and diagnose uniform plasmas with a density close or above the critical density. The target consists of a polyimide tube filled with an ultra low-density plastic foam where it was heated by x-rays, produced by a long pulse laser irradiating a copper foil placed at one end of the tube. The density and temperature of the ionized foam was retrieved by using x-ray radiography and proton radiography was used to verify the uniformity of the plasma. Plasma temperatures of 5-10 eV and densities around 10(21) cm(-3) are measured. This well-characterized platform of uniform density and temperature plasma is of interest for experiments using large-scale laser platforms conducting High Energy Density Physics investigations.
authors.affiliation: LULI - CNRS, Ecole Polytechnique, CEA: Universit´e Paris-Saclay; UPMC Univ Paris 06: Sorbonne Universites - F-91128, Palaiseau cedex, France.|Institute of Applied Physics, 46 Ulyanov Street, 603950 Nizhny Novgorod, Russia.
authors.forename: S N
authors.initials: SN
authors.lastname: Chen
authors.affiliation: Graduate School of Engineering, Osaka University, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Iwawaki
authors.affiliation: Graduate School of Engineering, Osaka University, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Morita
authors.affiliation: La SAPIENZA, University of Rome, Dip. SBAI, 00161 Rome, Italy.
authors.forename: P
authors.initials: P
authors.lastname: Antici
authors.affiliation: LULI - CNRS, Ecole Polytechnique, CEA: Universit´e Paris-Saclay; UPMC Univ Paris 06: Sorbonne Universites - F-91128, Palaiseau cedex, France.
authors.forename: S D
authors.initials: SD
authors.lastname: Baton
authors.affiliation: La SAPIENZA, University of Rome, Dip. SBAI, 00161 Rome, Italy.
authors.forename: F
authors.initials: F
authors.lastname: Filippi
authors.affiliation: Graduate School of Engineering, Osaka University, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Habara
authors.affiliation: LULI - CNRS, Ecole Polytechnique, CEA: Universit´e Paris-Saclay; UPMC Univ Paris 06: Sorbonne Universites - F-91128, Palaiseau cedex, France.|European X-Ray Free-Electron Laser Facility (XFEL) GmbH, Hamburg, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Nakatsutsumi
authors.affiliation: Univ. Bordeaux - CEA - CNRS, CELIA, UMR 5107, F-33405 Talence, France.
authors.forename: P
authors.initials: P
authors.lastname: Nicolaï
authors.affiliation: University of St Andrews, High Energy Laser Materials Laboratory, Unit 4, NTC, North Haugh, St Andrews, KY16 9SR, UK.
authors.forename: W
authors.initials: W
authors.lastname: Nazarov
authors.affiliation: CEA, DAM, DIF, F-91297 Arpajon, France.
authors.forename: C
authors.initials: C
authors.lastname: Rousseaux
authors.affiliation: Institute of Applied Physics, 46 Ulyanov Street, 603950 Nizhny Novgorod, Russia.
authors.forename: M
authors.initials: M
authors.lastname: Starodubstev
authors.affiliation: Graduate School of Engineering, Osaka University, Japan.
authors.forename: K A
authors.initials: KA
authors.lastname: Tanaka
authors.affiliation: LULI - CNRS, Ecole Polytechnique, CEA: Universit´e Paris-Saclay; UPMC Univ Paris 06: Sorbonne Universites - F-91128, Palaiseau cedex, France.|Institute of Applied Physics, 46 Ulyanov Street, 603950 Nizhny Novgorod, Russia.
authors.forename: J
authors.initials: J
authors.lastname: Fuchs