Laser-ablation treatment of short-pulse laser targets: Toward an experimental program on energetic-ion interactions with dense plasmas
- 30 August 2005
- journal article
- research article
- Published by Cambridge University Press (CUP) in Laser and Particle Beams
- Vol. 23 (03), 267-273
- https://doi.org/10.1017/s0263034605050287
Abstract
This new project relies on the capabilities collocated at Los Alamos in the Trident laser facility of long-pulse laser drive, for laser-plasma formation, and high-intensity short-pulse laser drive, for relativistic laser-matter interaction experiments. Specifically, we are working to understand quantitatively the physics that underlie the generation of laser-driven MeV/nucleon ion beams, in order to extend these capabilities over a range of ion species, to optimize beam generation, and to control those beams. Furthermore, we intend to study the interaction of these novel laser-driven ion beams with dense plasmas, which are relevant to important topics such as the fast-ignition method of inertial confinement fusion (ICF), weapons physics, and planetary physics. We are interested in irradiating metallic foils with the Trident short-pulse laser to generate medium to heavy ion beams (Z = 20–45) with high efficiency. At present, target-surface impurities seem to be the main obstacle to reliable and efficient acceleration of metallic ions in the foil substrate. In order to quantify the problem, measurements of surface impurities on typical metallic-foil laser targets were made. To eliminate these impurities, we resorted to novel target-treatment techniques such as Joule-heating and laser-ablation, using a long-pulse laser intensity of ∼ 1010 W/cm2. Our progress on this promising effort is presented in this paper, along with a summary of the overall project.Keywords
This publication has 10 references indexed in Scilit:
- Interaction of ultra-intense laser pulses with relativistic ionsLaser and Particle Beams, 2004
- Ion acceleration in overdense plasma by short laser pulseLaser and Particle Beams, 2004
- Ultralow Emittance, Multi-MeV Proton Beams from a Laser Virtual-Cathode Plasma AcceleratorPhysical Review Letters, 2004
- Production of ion beams in high-power laser–plasma interactions and their applicationsLaser and Particle Beams, 2004
- Diagnostic potential of advanced X-ray spectroscopy for investigation of hot dense plasmasLaser and Particle Beams, 2004
- Energy deposition of heavy ions in the regime of strong beam-plasma correlationsPhysical Review E, 2003
- MeV Ion Jets from Short-Pulse-Laser Interaction with Thin FoilsPhysical Review Letters, 2002
- Stopping power for strong beam–plasma couplingLaser and Particle Beams, 2002
- Intense High-Energy Proton Beams from Petawatt-Laser Irradiation of SolidsPhysical Review Letters, 2000
- Electron, photon, and ion beams from the relativistic interaction of Petawatt laser pulses with solid targetsPhysics of Plasmas, 2000