Macroscopic evidence of soliton formation in multiterawatt laser-plasma interaction |
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| Authors: | Borghesi M Bulanov S Campbell D H Clarke R J Esirkepov T Zh Galimberti M Gizzi L A MacKinnon A J Naumova N M Pegoraro F Ruhl H Schiavi A Willi O |
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| Institution: | Department of Pure & Applied Physics, Queen's University, Belfast, United Kingdom. |
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| Abstract: | A novel physical phenomenon has been observed following the interaction of an intense (10(19) W/cm(2)) laser pulse with an underdense plasma. Long-lived, macroscopic bubblelike structures have been detected through the deflection that the associated electric charge separation causes in a proton probe beam. These structures are interpreted as the remnants of a cloud of relativistic solitons generated in the plasma by the ultraintense laser pulse. This interpretation is supported by an analytical study of the soliton cloud evolution, by particle-in-cell simulations, and by a reconstruction of the proton-beam deflection. |
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