Hydrodynamic instabilities seeded by the X-ray shadow of ICF capsule fill-tubes [X-ray shadow imprint of hydrodynamic instabilities seeded by the fill-tube]
Abstract
During the first few hundred picoseconds of indirect drive for inertial confinement fusion on the National Ignition Facility, x-ray spots formed on the hohlraum wall when the drive beams cast shadows of the fuel fill-tube on the capsule surface. Differential ablation at the shadow boundaries seeds perturbations which are hydrodynamically unstable under subsequent acceleration and can grow to impact capsule performance. Furthermore, we have characterized this shadow imprint mechanism and demonstrated two techniques to mitigate against it using (i) a reduced diameter fuel fill-tube, and (ii) a pre-pulse to blow down the fill-tube before the shadow forming x-ray spots from the main outer drive beams develop.
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- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- General Atomics, San Diego, CA (United States)
- Diamond Materials GmbH, Freiburg (Germany)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1476853
- Alternate Identifier(s):
- OSTI ID: 1462576
- Report Number(s):
- LLNL-JRNL-750326
Journal ID: ISSN 1070-664X; 935119
- Grant/Contract Number:
- AC52-07NA27344; NA0001808
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 25; Journal Issue: 8; Journal ID: ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Citation Formats
MacPhee, A. G., Smalyuk, V. A., Landen, O. L., Weber, C. R., Robey, H. F., Alfonso, E. L., Baker, K. L., Berzak Hopkins, L. F., Biener, J., Bunn, T., Casey, D. T., Clark, D. S., Crippen, J. W., Divol, L., Farrell, M., Felker, S., Field, J. E., Hsing, W. W., Kong, C., Le Pape, S., Martinez, D. A., Michel, P., Milovich, J., Moore, A., Nikroo, A., Pickworth, L., Rice, N., Stadermann, M., Yeamans, C., and Wild, C. Hydrodynamic instabilities seeded by the X-ray shadow of ICF capsule fill-tubes [X-ray shadow imprint of hydrodynamic instabilities seeded by the fill-tube]. United States: N. p., 2018.
Web. doi:10.1063/1.5037816.
MacPhee, A. G., Smalyuk, V. A., Landen, O. L., Weber, C. R., Robey, H. F., Alfonso, E. L., Baker, K. L., Berzak Hopkins, L. F., Biener, J., Bunn, T., Casey, D. T., Clark, D. S., Crippen, J. W., Divol, L., Farrell, M., Felker, S., Field, J. E., Hsing, W. W., Kong, C., Le Pape, S., Martinez, D. A., Michel, P., Milovich, J., Moore, A., Nikroo, A., Pickworth, L., Rice, N., Stadermann, M., Yeamans, C., & Wild, C. Hydrodynamic instabilities seeded by the X-ray shadow of ICF capsule fill-tubes [X-ray shadow imprint of hydrodynamic instabilities seeded by the fill-tube]. United States. https://doi.org/10.1063/1.5037816
MacPhee, A. G., Smalyuk, V. A., Landen, O. L., Weber, C. R., Robey, H. F., Alfonso, E. L., Baker, K. L., Berzak Hopkins, L. F., Biener, J., Bunn, T., Casey, D. T., Clark, D. S., Crippen, J. W., Divol, L., Farrell, M., Felker, S., Field, J. E., Hsing, W. W., Kong, C., Le Pape, S., Martinez, D. A., Michel, P., Milovich, J., Moore, A., Nikroo, A., Pickworth, L., Rice, N., Stadermann, M., Yeamans, C., and Wild, C. Thu .
"Hydrodynamic instabilities seeded by the X-ray shadow of ICF capsule fill-tubes [X-ray shadow imprint of hydrodynamic instabilities seeded by the fill-tube]". United States. https://doi.org/10.1063/1.5037816. https://www.osti.gov/servlets/purl/1476853.
@article{osti_1476853,
title = {Hydrodynamic instabilities seeded by the X-ray shadow of ICF capsule fill-tubes [X-ray shadow imprint of hydrodynamic instabilities seeded by the fill-tube]},
author = {MacPhee, A. G. and Smalyuk, V. A. and Landen, O. L. and Weber, C. R. and Robey, H. F. and Alfonso, E. L. and Baker, K. L. and Berzak Hopkins, L. F. and Biener, J. and Bunn, T. and Casey, D. T. and Clark, D. S. and Crippen, J. W. and Divol, L. and Farrell, M. and Felker, S. and Field, J. E. and Hsing, W. W. and Kong, C. and Le Pape, S. and Martinez, D. A. and Michel, P. and Milovich, J. and Moore, A. and Nikroo, A. and Pickworth, L. and Rice, N. and Stadermann, M. and Yeamans, C. and Wild, C.},
abstractNote = {During the first few hundred picoseconds of indirect drive for inertial confinement fusion on the National Ignition Facility, x-ray spots formed on the hohlraum wall when the drive beams cast shadows of the fuel fill-tube on the capsule surface. Differential ablation at the shadow boundaries seeds perturbations which are hydrodynamically unstable under subsequent acceleration and can grow to impact capsule performance. Furthermore, we have characterized this shadow imprint mechanism and demonstrated two techniques to mitigate against it using (i) a reduced diameter fuel fill-tube, and (ii) a pre-pulse to blow down the fill-tube before the shadow forming x-ray spots from the main outer drive beams develop.},
doi = {10.1063/1.5037816},
journal = {Physics of Plasmas},
number = 8,
volume = 25,
place = {United States},
year = {Thu Aug 02 00:00:00 EDT 2018},
month = {Thu Aug 02 00:00:00 EDT 2018}
}
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Works referencing / citing this record:
Three-dimensional modeling and hydrodynamic scaling of National Ignition Facility implosions
journal, May 2019
- Clark, D. S.; Weber, C. R.; Milovich, J. L.
- Physics of Plasmas, Vol. 26, Issue 5
Making inertial confinement fusion models more predictive
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Mixing in ICF implosions on the National Ignition Facility caused by the fill-tube
journal, March 2020
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Review of hydrodynamic instability experiments in inertially confined fusion implosions on National Ignition Facility
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