Passive freeze-out of the Richtmyer-Meshkov instability
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arXiv
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| Autores principales: | , , , , , , , , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2026
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| author | Strucka, J. Sterbentz, D. M. Lukic, B. Mughal, K. Yao, Y. Marrow, K. Schill, W. J. Jekel, C. F. White, D. A. Asmedianov, N. Grikshtas, R. Belozerov, O. Efimov, S. Skidmore, J. Rack, A. Krasik, Ya. E. Belof, J. L. Chittenden, J. P. Bland, S. N. |
| author_facet | Strucka, J. Sterbentz, D. M. Lukic, B. Mughal, K. Yao, Y. Marrow, K. Schill, W. J. Jekel, C. F. White, D. A. Asmedianov, N. Grikshtas, R. Belozerov, O. Efimov, S. Skidmore, J. Rack, A. Krasik, Ya. E. Belof, J. L. Chittenden, J. P. Bland, S. N. |
| contents | The Richtmyer-Meshkov instability (RMI) poses a major challenge in inertial confinement fusion (ICF) due to its role in mixing and performance degradation. We report the first experimental observation of passive freeze-out of RMI in a low-pressure surrogate regime; an instability stagnation effect induced without modifying the driving pressure pulse or the target surface geometry. Using additively manufactured sub-surface voids in a sinusoidal target, we convert a single shock into a sequence of weaker shocks that suppress instability growth upstream of the surface by over 70%. High-speed X-ray imaging and hydrodynamic simulations suggest that this suppression arises primarily from temporal shaping, with lesser contributions from spatial curvature and shock weakening. Our results demonstrate a driver-independent pathway for controlling shock-driven hydrodynamic instabilities relevant to ICF and other high energy density systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_21375 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Passive freeze-out of the Richtmyer-Meshkov instability Strucka, J. Sterbentz, D. M. Lukic, B. Mughal, K. Yao, Y. Marrow, K. Schill, W. J. Jekel, C. F. White, D. A. Asmedianov, N. Grikshtas, R. Belozerov, O. Efimov, S. Skidmore, J. Rack, A. Krasik, Ya. E. Belof, J. L. Chittenden, J. P. Bland, S. N. Plasma Physics Fluid Dynamics The Richtmyer-Meshkov instability (RMI) poses a major challenge in inertial confinement fusion (ICF) due to its role in mixing and performance degradation. We report the first experimental observation of passive freeze-out of RMI in a low-pressure surrogate regime; an instability stagnation effect induced without modifying the driving pressure pulse or the target surface geometry. Using additively manufactured sub-surface voids in a sinusoidal target, we convert a single shock into a sequence of weaker shocks that suppress instability growth upstream of the surface by over 70%. High-speed X-ray imaging and hydrodynamic simulations suggest that this suppression arises primarily from temporal shaping, with lesser contributions from spatial curvature and shock weakening. Our results demonstrate a driver-independent pathway for controlling shock-driven hydrodynamic instabilities relevant to ICF and other high energy density systems. |
| title | Passive freeze-out of the Richtmyer-Meshkov instability |
| topic | Plasma Physics Fluid Dynamics |
| url | https://arxiv.org/abs/2602.21375 |