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Showing 1 to 5 of 5 for “"Hole-boring"”.
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Transition from transparency to hole-boring in relativistic laser-solid interactions at the Texas Petawatt
… by the potential in a process known as hole boring. Both processes are present during laser-solid interactions, but relative contributions to critical surface motion depend on the density profile of the target and the da0/dt of the laser pulse. We have conducted experiments which use the …
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Intra-pulse dynamics of laser-driven ion acceleration in ultra-thin foils
… target before the peak of the pulse arrives, the hole boring mechanism of RPA can be optimised along the laser axis.;However, in the case where the temporal width at 1% is relatively larger, the hole boring mechanism no longer dominates the interaction, as the target undergoes relativis-tic …
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A computer aided palaeoecological study of selected Red Crag (Lower Pleistocene) gastropods
… encrusting annelids. A study of the diets of the hole boring muricid and naticid gastropods shows the muricids to have favoured the shallow burrowing and coarse sediment dwelling bivalves Astarte, Glycymeris and the gastropod Turritella. The naticids however favoured the bivalves Spisula and …
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Schemes of ion acceleration employing high energy, petawatt laser pulses
… acceleration (RPA) in the limits of thick (hole boring) and thin (light sail) target regimes.<br/><br/>In the first experiment, a target composed of a solid cryogenic hydrogen ribbon, 75- 100μm in thickness, was irradiated with pulses containing an energy of 300J, focused at intensities up …
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Multispecies ion acceleration from intense laser interactions with thin foils
… from 55 nm to 75 nm, indicating an enhanced hole boring velocity from 0.1c to 0.14c. Numerical simulations indicate that this effect is due to the development of a hot electron current, and subsequently equalising return currents, in the overdense bulk plasma, which result in the growth of …