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Title: Subpercent-Scale Control of 3D Low Modes of Targets Imploded in Direct-Drive Configuration on OMEGA

In a series of direct-drive implosions on OMEGA, multiple time resolved x-ray images were used to tomographically measure their 3-D modes 1, 2, and 3 at a convergence ratio of ~3. Results show that the target modes vary linearly with the laser modes and are not affected by the Rayleigh–Taylor growth or lateral heat transport. This indicates that the residual modes (resulting from physical effects including beam mistiming, mispointing, and laser energy calibration) are approximately constant between shots. Lastly, this demonstrates that the low-mode amplitudes can be mitigated within by adjusting the laser-energy balance to compensate the residual target modes.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Univ. of Rochester, Rochester, NY (United States). Lab. for Laser Energetics
Publication Date:
Report Number(s):
2017-165; 14-03
Journal ID: ISSN 0031-9007; PRLTAO; 2017-165, 2359, 1403
Grant/Contract Number:
NA0001944
Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 120; Journal Issue: 12; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Research Org:
Univ. of Rochester, Rochester, NY (United States). Lab. for Laser Energetics
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
OSTI Identifier:
1437575
Alternate Identifier(s):
OSTI ID: 1429129

Michel, D. T., Igumenshchev, I. V., Davis, A. K., Edgell, D. H., Froula, D. H., Jacobs-Perkins, D. W., Goncharov, V. N., Regan, S. P., Shvydky, A., and Campbell, E. M.. Subpercent-Scale Control of 3D Low Modes of Targets Imploded in Direct-Drive Configuration on OMEGA. United States: N. p., Web. doi:10.1103/PhysRevLett.120.125001.
Michel, D. T., Igumenshchev, I. V., Davis, A. K., Edgell, D. H., Froula, D. H., Jacobs-Perkins, D. W., Goncharov, V. N., Regan, S. P., Shvydky, A., & Campbell, E. M.. Subpercent-Scale Control of 3D Low Modes of Targets Imploded in Direct-Drive Configuration on OMEGA. United States. doi:10.1103/PhysRevLett.120.125001.
Michel, D. T., Igumenshchev, I. V., Davis, A. K., Edgell, D. H., Froula, D. H., Jacobs-Perkins, D. W., Goncharov, V. N., Regan, S. P., Shvydky, A., and Campbell, E. M.. 2018. "Subpercent-Scale Control of 3D Low Modes of Targets Imploded in Direct-Drive Configuration on OMEGA". United States. doi:10.1103/PhysRevLett.120.125001.
@article{osti_1437575,
title = {Subpercent-Scale Control of 3D Low Modes of Targets Imploded in Direct-Drive Configuration on OMEGA},
author = {Michel, D. T. and Igumenshchev, I. V. and Davis, A. K. and Edgell, D. H. and Froula, D. H. and Jacobs-Perkins, D. W. and Goncharov, V. N. and Regan, S. P. and Shvydky, A. and Campbell, E. M.},
abstractNote = {In a series of direct-drive implosions on OMEGA, multiple time resolved x-ray images were used to tomographically measure their 3-D modes 1, 2, and 3 at a convergence ratio of ~3. Results show that the target modes vary linearly with the laser modes and are not affected by the Rayleigh–Taylor growth or lateral heat transport. This indicates that the residual modes (resulting from physical effects including beam mistiming, mispointing, and laser energy calibration) are approximately constant between shots. Lastly, this demonstrates that the low-mode amplitudes can be mitigated within by adjusting the laser-energy balance to compensate the residual target modes.},
doi = {10.1103/PhysRevLett.120.125001},
journal = {Physical Review Letters},
number = 12,
volume = 120,
place = {United States},
year = {2018},
month = {3}
}