title: Ultrafast electron radiography of magnetic fields in high-intensity laser-solid interactions.
abstract: Using electron bunches generated by laser wakefield acceleration as a probe, the temporal evolution of magnetic fields generated by a 4 × 10(19) W/cm(2) ultrashort (30 fs) laser pulse focused on solid density targets is studied experimentally. Magnetic field strengths of order B(0) ~ 10(4) T are observed expanding at close to the speed of light from the interaction point of a high-contrast laser pulse with a 10-μm-thick aluminum foil to a maximum diameter of ~1 mm. The field dynamics are shown to agree with particle-in-cell simulations.
authors: Center for Ultrafast Optical Science, University of Michigan, Ann Arbor, Michigan 48109, USA.
authors: W
authors: W
authors: Schumaker
authors: N
authors: N
authors: Nakanii
authors: C
authors: C
authors: McGuffey
authors: C
authors: C
authors: Zulick
authors: V
authors: V
authors: Chyvkov
authors: F
authors: F
authors: Dollar
authors: H
authors: H
authors: Habara
authors: G
authors: G
authors: Kalintchenko
authors: A
authors: A
authors: Maksimchuk
authors: K A
authors: KA
authors: Tanaka
authors: A G R
authors: AG
authors: Thomas
authors: V
authors: V
authors: Yanovsky
authors: K
authors: K
authors: Krushelnick
mesh_terms: D004583:Electrons; D007834:Lasers; D008280:Magnetics; D008962:Models, Theoretical; D010315:Particle Accelerators; D013057:Spectrum Analysis / Q000379:methods; D013679:Technology, Radiologic / Q000379:methods*