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

Journal Article · Sat Nov 15 00:00:00 EST 2014 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4890575· OSTI ID:22308651

Uematsu, Y.; Iwawaki, T.; Tanaka, K. A. ^[1]; Ivancic, S.; Theobald, W. ^[2]; Lei, A. L. ^[3]

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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)

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.

• OSTI ID: 22308651
• Journal Information: Review of Scientific Instruments, Vol. 85, Issue 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CHANNELING
COMPUTERIZED SIMULATION
ELECTRIC FIELDS
IGNITION
LASERS
MAGNETIC FIELDS
MEASURING METHODS
PLASMA DENSITY
PROTON RADIOGRAPHY
TRAJECTORIES