Affiliation:
1. Osaka University
2. National Institute of Advanced Industrial Science and Technology
3. National Institute for Fusion Science
4. University of Nevada Reno
5. The Graduate School for the Creation of New Photonics Industries
6. Akashi College
7. Purdue University
8. Hiroshima University
Abstract
A counter-propagating laser-beam platform using a spherical plasma mirror was developed for the kilojoule-class petawatt LFEX laser. The temporal and spatial overlaps of the incoming and redirected beams were measured with an optical interferometer and an x-ray pinhole camera. The plasma mirror performance was evaluated by measuring fast electrons, ions, and neutrons generated in the counter-propagating laser interaction with a Cu-doped deuterated film on both sides. The reflectivity and peak intensity were estimated as ∼50% and ∼5 × 1018 W/cm2, respectively. The platform could enable studies of counter-streaming charged particles in high-energy-density plasmas for fundamental and inertial confinement fusion research.
Funder
National Institute for Fusion Science
Institute of Laser Engineering at Osaka University
Ministry of Education, Culture, Sports, Science and Technology
Subject
Atomic and Molecular Physics, and Optics