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Summary form only given. The electromagnetic fields generated following the interaction of a 3x1019 W cm-2 infrared pulse with a gold wire have been investigated using the well-documented proton radiography diagnostic. The pulse is observed to drive a transient current along the length of the wire, the spread velocity of which is confidently measured via a novel experimental arrangement to be ~c....
Through the time- and space-resolved interferometry of a short-pulse low-energy probe beam reflecting on the rear surface of a solid target irradiated on its front surface by a high-intensity laser, we have measured a very abrupt expansion of the target rear surface. The experiments were performed using the LULI 100-TW laser facility with a maximum of 10-20 J energy pulses of > 1019 W ldr cm-2...
Summary form only given. In the regime of ponderomotive ion acceleration (PIA) by super intense, ultra short laser pulses, the accelerating space-charge field is generated by the direct action of the laser ponderomotive pressure, rather than by escaping fast electrons. In this contribution, two prominent examples of PIA are investigated here with analytical modeling and numerical simulations, emphasizing...
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