Author/Authors :
Pawley، نويسنده , , C.J and Sethian، نويسنده , , J.D and Bodner، نويسنده , , S.E and Gerber، نويسنده , , K.A and Lehmberg، نويسنده , , R.H and McLean، نويسنده , , E.A and Mostovych، نويسنده , , A.N and Obenschain، نويسنده , , S.P and Serlin، نويسنده , , V and Stamper، نويسنده , , J.A and Colombant، نويسنده , , D and Dahlburg، نويسنده , , J.P. and Schmitt، نويسنده , , A.J and Gardner، نويسنده , , J.H and Aglitskiy، نويسنده , , Y and Chan، نويسنده , , Y and Deniz، نويسنده , , A.V and Lehecka، نويسنده , , T and Brown، نويسنده , , J and Seely، نويسنده , , J and Klapisch، نويسنده , , M، نويسنده ,
Abstract :
Nike is a multi-kilojoule KrF laser with very high beam uniformity (ΔI/I<0.2% with all 36 overlapped beams), and the capability to accelerate relatively thick targets on a low adiabat under conditions scalable to direct drive ICF. In a first set of experiments we determined the effect of the imprinting by varying the uniformity of the foot of the laser pulse and measuring the growth of the subsequent Rayleigh-Taylor instability. We found that the lower the imprint, the longer the mass modulations take to reach a given level. This is in quantitative agreement with our 2-D hydrodynamics simulations. The results are promising for direct drive with a very uniform laser.
