Abel Blazevic GSI Plasma Physics/TU Darmstadt June 8, 2004 Energy loss of heavy ions in dense plasma Goal: To understand the interaction of heavy ions with hot, dense matter Therefore: Study the charge state evolutions and energy loss of heavy ions interacting with solids (HMI) and plasma (GSI). Application: Heavy Ion driven Inertial Confinement Fusion Heavy Ion driven Material Processing

Abel Blazevic GSI Plasma Physics/TU Darmstadt June 8, 2004 Outline  Experimental setup at GSI  Plasma- and Laser diagnostic pinhole cameras X-ray spectroscopy visible streak camera laser interferometry laser output sensor  PIC simulations of the laser-plasma interaction  Interaction of Ar ions with solid carbon foils charge exchange cross sections charge dependent stopping power S(q)  Outlook

Abel Blazevic GSI Plasma Physics/TU Darmstadt June 8, 2004 Experimental setup at GSI nhelix mirror focus lens target ion beam Ion bunches at 103 MHz FWHM = 3 ns

Abel Blazevic GSI Plasma Physics/TU Darmstadt June 8, 2004 ion beam visible streak camera laser interferomerty X-ray streak camera Laser output sensor laser beam pinhole cameras Plasma diagnostic setup

Abel Blazevic GSI Plasma Physics/TU Darmstadt June 8, 2004 Plasma diagnostic – pinhole camera Magnifying pinhole camera pinhole camera T e ≈ 150 – 200 eV hn > 300 eV hn > 300 eV / 2 keV

Abel Blazevic GSI Plasma Physics/TU Darmstadt June 8, 2004 Time resolved and space integrated line radiation of carbon laser produced plasma Plasma diagnostic – X-ray spectroscopy time C-foil m=500 m g/cm 2 C +5 C +4 C +5 Ry T e ~ eV n e = cm -3 T e : I Ly  / I He  n e : n max of Ry satellites

Abel Blazevic GSI Plasma Physics/TU Darmstadt June 8, 2004 Plasma diagnostic – vis. streak camera V = 8.84 · 10 6 cm/s  T = 240 eV

Abel Blazevic GSI Plasma Physics/TU Darmstadt June 8, 2004 Plasma diagnostic – laser interferometry Fringe shifts due to varying electron density, n e < cm -3

Abel Blazevic GSI Plasma Physics/TU Darmstadt June 8, 2004 Laser diagnostic  Energy: 70 –110 J  Focus intensity profile  Temporal profile  Reflected light 14 ns *

Abel Blazevic GSI Plasma Physics/TU Darmstadt June 8, 2004 PIC simulation ring focus #27i, r = 0.4 mm, FWHM = 0.4 mm t=6 ns t=8 ns t=10 ns

Abel Blazevic GSI Plasma Physics/TU Darmstadt June 8, 2004 Charge State Evolution of Ar in solid C HMI Berlin Q3D: ΔE/E= Exp: f(q i, q f, d) of Ar, 4 MeV/u Theory: solution of the rate equations  cross sections e-capture ionization excitation decay Blazevic et al., Phys. Rev. A, vol. 61,

Abel Blazevic GSI Plasma Physics/TU Darmstadt June 8, 2004 Charge dependent energy loss  E of 4 MeV/u in Carbon

Abel Blazevic GSI Plasma Physics/TU Darmstadt June 8, 2004 ΔE(q,d) + б i + MCS  S(q) Charge dependent stopping power S(q) Theory: Sigmund/Schinner Phys. Scr.T92 (2001) 222 Schiwietz/Grande NIM B153 (1999) 1 Maynard NIM A 464 (2001) 86 Kaneko Phys.Rev. A49(4) (1994)2681 Blazevic et al., NIM B 190 (2002) 64

Abel Blazevic GSI Plasma Physics/TU Darmstadt June 8, 2004 Outlook  Upgrade the laser interferometry to  = 256 nm, t L = 0.5 ns  4 frame pinhole camera, t exp = 3 ns  Improvement of the laser focus  Benchmarks for the PIC simulation of the plasma  Calculate the projectile´s charge states evolution in plasma Scale the charge exchange cross sections in solid matter to plasma conditions & solve the rate equations nN-CTMC simulation of the ion- plasma interaction  Energy loss experiments with the PHELIX laser and hohlraum targets

Abel Blazevic GSI Plasma Physics/TU Darmstadt June 8, 2004 ring focus #27d, r = 0.3 mm, FWHM = 0.4 mm t=8 ns t=9 ns t=10 ns PIC simulation