Superthermal and Efficient-Heating Modes in the Interaction of a Cone Target with Ultraintense Laser Light
- 30 January 2009
- journal article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 102 (4), 045009
- https://doi.org/10.1103/physrevlett.102.045009
Abstract
Interactions between a relativistic-intensity laser pulse and a cone-wire target are studied by changing the focusing point of the pulse. The pulse, when focused on the sidewall of the cone, produced superthermal electrons with an energy , whereas less energetic electrons were produced by the pulse when focused on the cone tip. Efficient heating of the wire was indicated by significant neutron signals observed when the pulse was focused on the tip. Particle-in-cell simulation results show reduced heating of the wire due to energetic electrons produced by specularly reflected light at the sidewall.
Keywords
This publication has 14 references indexed in Scilit:
- Numerical methods for particle simulations at extreme densities and temperatures: Weighted particles, relativistic collisions and reduced currentsJournal of Computational Physics, 2008
- Development of multichannel wave-coincidence neutron spectrometer for fast ignition experimentsReview of Scientific Instruments, 2006
- Calibration of imaging plate for high energy electron spectrometerReview of Scientific Instruments, 2004
- Fast plasma heating in a cone-attached geometry—towards fusion ignitionNuclear Fusion, 2004
- Laser light and hot electron micro focusing using a conical targetPhysics of Plasmas, 2004
- Prepulse-Free Petawatt Laser for a Fast IgnitorIEEE Journal of Quantum Electronics, 2004
- Fast ignitor research at the Institute of Laser Engineering, Osaka UniversityPhysics of Plasmas, 2001
- Long-Scale Jet Formation with Specularly Reflected Light in Ultraintense Laser-Plasma InteractionsPhysical Review Letters, 2000
- Plasma jet formation and magnetic-field generation in the intense laser plasma under oblique incidencePhysics of Plasmas, 1999
- Experimental Measurements of Hot Electrons Generated by Ultraintense () Laser-Plasma Interactions on Solid-Density TargetsPhysical Review Letters, 1998