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Title: Measuring the strong electrostatic and magnetic fields with proton radiography for ultra-high intensity laser channeling on fast ignition

In order to investigate the intense laser propagation and channel formation in dense plasma, we conducted an experiment with proton deflectometry on the OMEGA EP Laser facility. The proton image was analyzed by tracing the trajectory of mono-energetic protons, which provides understanding the electric and magnetic fields that were generated around the channel. The estimated field strengths (E ∼ 10{sup 11} V/m and B ∼ 10{sup 8} G) agree with the predictions from 2D-Particle-in-cell (PIC) simulations, indicating the feasibility of the proton deflectometry technique for over-critical density plasma.
Authors:
; ; ;  [1] ; ;  [2] ;  [3]
  1. Graduate School of Engineering, Osaka University, Osaka 565-0871 (Japan)
  2. Laboratory for Laser Energetics, 250 East River Road, Rochester, New York 14623-1299 (United States)
  3. Shanghai Institute of Laser Plasma, 201800 Shanghai (China)
Publication Date:
OSTI Identifier:
22308651
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; CHANNELING; COMPUTERIZED SIMULATION; ELECTRIC FIELDS; IGNITION; LASERS; MAGNETIC FIELDS; MEASURING METHODS; PLASMA DENSITY; PROTON RADIOGRAPHY; TRAJECTORIES