Laser material interactions in tamped materials on picosecond time scales in aluminum

Journal Article · 13 November 2023 · Applied Physics Letters

DOI: https://doi.org/10.1063/5.0169533 · OSTI ID:2228559

Parsons, Sophie E.  ^[1]; Turner, Ross E.  ^[1]; Armstrong, Michael R.  ^[2]; Radousky, Harry B.  ^[2]; Garay, Javier E.  ^[3]; Beg, Farhat N.  ^[3]

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1. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Univ. of California, San Diego, CA (United States)
2. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
3. Univ. of California, San Diego, CA (United States)

Here, a 100 ps laser is used to probe the pressure generation, depth of the non-solid ablator, and the non-linear optical effects through tamper materials. Samples consisted of an aluminum ablator with tampers of sapphire and coverslip glass. In general, the sapphire tamped sample achieves higher pressures at lower laser intensities as compared to the coverslip glass tamped sample. Attempts to model the details of this set of experimental data with standard available radiation coupled hydrodynamic codes make clear that more physics is needed in these simulations to accurately predict the impact of the tamper material on the pressure generation and the depth of non-solid aluminum.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA); Defense Threat Reduction Agency (DTRA)
• Grant/Contract Number: AC52-07NA27344
• OSTI ID: 2228559
• Report Number(s): LLNL--JRNL-843831; 1066256
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 20 Vol. 123; ISSN 0003-6951
• Publisher: American Institute of Physics (AIP)Copyright Statement
• Country of Publication: United States
• Language: English