Simulations of the interaction of intense petawatt laser pulses with dense Z-pinch plasmas : final report LDRD 39670.

Welch, Dale Robert (Mission Research Corporation, Albuquerque, NM) ; MacFarlane, Joseph John (Prism Computational Sciences, Madison, WI) ; Mehlhorn, Thomas Alan ; Campbell, Robert B.

Sandia National Laboratories

关键词: Interactions;    70 Plasma Physics And Fusion Technology;    Petawatt Power Range;    Laser Radiation;    Computerized Simulation Laser Pulses, Ultrafast.;   

DOI  :  10.2172/920736
RP-ID  :  SAND2004-5636
RP-ID  :  AC04-94AL85000
RP-ID  :  920736

美国|英语

来源: UNT Digital Library

【 摘 要 】

We have studied the feasibility of using the 3D fully electromagnetic implicit hybrid particle code LSP (Large Scale Plasma) to study laser plasma interactions with dense, compressed plasmas like those created with Z, and which might be created with the planned ZR. We have determined that with the proper additional physics and numerical algorithms developed during the LDRD period, LSP was transformed into a unique platform for studying such interactions. Its uniqueness stems from its ability to consider realistic compressed densities and low initial target temperatures (if required), an ability that conventional PIC codes do not possess. Through several test cases, validations, and applications to next generation machines described in this report, we have established the suitability of the code to look at fast ignition issues for ZR, as well as other high-density laser plasma interaction problems relevant to the HEDP program at Sandia (e.g. backlighting).