Journal
PHYSICAL REVIEW LETTERS
Volume 110, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.110.015003
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Funding
- Department of Energy
- National Science Foundation [0810979]
- Grants-in-Aid for Scientific Research [23360412, 22246122] Funding Source: KAKEN
- Division Of Physics
- Direct For Mathematical & Physical Scien [934694, 1054164, 0810979] Funding Source: National Science Foundation
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Using electron bunches generated by laser wakefield acceleration as a probe, the temporal evolution of magnetic fields generated by a 4 X 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 similar to 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-mu m-thick aluminum foil to a maximum diameter of similar to 1 mm. The field dynamics are shown to agree with particle-in-cell simulations. DOI: 10.1103/PhysRevLett.110.015003
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