Explosively driven two-shockwave tools with applications

18th APS-SCCM; 24th AIRAPT

Buttler, W.T.^1 ; Oró, D.M.^1 ; Mariam, F.G.^1 ; Saunders, A.^1 ; Andrews, M.J.^2 ; Cherne, F.J.^3 ; Hammerberg, J.E.^2 ; Hixson, R.S.^4 ; Monfared, S.K.^1 ; Morris, C.^1 ; Olson, R.T.^1 ; Preston, D.L.^2 ; Stone, J.B.^1 ; Terrones, G.^5 ; Tupa, D.^1 ; Vogan-Mcneil, W.^1

Los Alamos National Laboratory, Physics, Los Alamos

NM

87545, United States^1

Los Alamos National Laboratory, X-Computational Physics, Los Alamos

NM

87545, United States^2

Los Alamos National Laboratory, Weapon's Experiments, Los Alamos

NM

87545, United States^3

National Securities Technologies, Los Alamos

NM

87544, United States^4

Los Alamos National Laboratory, X-Theoretical Design, Los Alamos

NM

87545, United States^5

关键词: Los Alamos National Laboratory;    Model-based OPC;    Perturbation amplitude;    Proton radiography;    Richtmyer-Meshkov;    Wave numbers;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/500/11/112014/pdf
DOI  :  10.1088/1742-6596/500/11/112014

来源: IOP

【 摘 要 】

We present the development of an explosively driven physics tool to generate two mostly uniaxial shockwaves. The tool is being used to extend single shockwave ejecta models to account for a second shockwave a few microseconds later. We explore techniques to vary the amplitude of both the first and second shockwaves, and we apply the tool experimentally at the Los Alamos National Laboratory Proton Radiography (pRad)facility. The tools have been applied to Sn with perturbations of wavelength λ 550 μm, and various amplitudes that give wavenumber amplitude products of kh ∈ {3/4,1/2,1/4,1/8}, where h is the perturbation amplitude, and k 2π/λ is the wavenumber. The pRad data suggest the development of a second shock ejecta model based on unstable Richtmyer-Meshkov physics.