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Title: Using multiple secondary fusion products to evaluate fuel ρR, electron temperature, and mix in deuterium-filled implosions at the NIF

Abstract

In deuterium-filled inertial confinement fusion implosions, the secondary fusion processes D(3He,p)4He and D(T,n)4He occur, as the primary fusion products 3He and T react in flight with thermal deuterons. In implosions with moderate fuel areal density (~ 5–100 mg/cm2), the secondary D-3He reaction saturates, while the D-T reaction does not, and the combined information from these secondary products is used to constrain both the areal density and either the plasma electron temperature or changes in the composition due to mix of shell material into the fuel. The underlying theory of this technique is developed and applied to three classes of implosions on the National Ignition Facility: direct-drive exploding pushers, indirect-drive 1-shock and 2-shock implosions,and polar direct-drive implosions. In the 1- and 2-shock implosions, the electron temperature is inferred to be 0.65 x and 0.33 x the burn-averaged ion temperature, respectively. The inferred mixed mass in the polar direct-drive implosions is in agreement with measurements using alternative techniques.

Authors:
ORCiD logo [1];  [1];  [1]; ORCiD logo [1];  [1]; ORCiD logo [1];  [1];  [1]; ORCiD logo [1]; ORCiD logo [2];  [2];  [2]; ORCiD logo [2];  [2];  [2];  [2];  [2];  [2];  [2];  [2] more »; ORCiD logo [2];  [3];  [3];  [3]; ORCiD logo [3];  [3];  [3];  [3];  [4];  [5] « less
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  4. Univ. of Rochester, NY (United States). Lab. for Laser Energetics
  5. General Atomics, San Diego, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1234575
Alternate Identifier(s):
OSTI ID: 1215673; OSTI ID: 1229638
Report Number(s):
LLNL-JRNL-671547
Journal ID: ISSN 1070-664X
Grant/Contract Number:  
AC52-07NA27344; NA0001857; FG52-09NA29553; NA0000877; B580243
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 22; Journal Issue: 8; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 70 PLASMA PHYSICS AND FUSION; plasma temperature; collisional energy loss; helium-3; fusion fuels; fusion plasma; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Rinderknecht, H. G., Rosenberg, M. J., Zylstra, A. B., Lahmann, B., Séguin, F. H., Frenje, J. A., Li, C. K., Gatu Johnson, M., Petrasso, R. D., Berzak Hopkins, L. F., Caggiano, J. A., Divol, L., Hartouni, E. P., Hatarik, R., Hatchett, S. P., Le Pape, S., Mackinnon, A. J., McNaney, J. M., Meezan, N. B., Moran, M. J., Bradley, P. A., Kline, J. L., Krasheninnikova, N. S., Kyrala, G. A., Murphy, T. J., Schmitt, M. J., Tregillis, I. L., Batha, S. H., Knauer, J. P., and Kilkenny, J. D. Using multiple secondary fusion products to evaluate fuel ρR, electron temperature, and mix in deuterium-filled implosions at the NIF. United States: N. p., 2015. Web. doi:10.1063/1.4928382.
Rinderknecht, H. G., Rosenberg, M. J., Zylstra, A. B., Lahmann, B., Séguin, F. H., Frenje, J. A., Li, C. K., Gatu Johnson, M., Petrasso, R. D., Berzak Hopkins, L. F., Caggiano, J. A., Divol, L., Hartouni, E. P., Hatarik, R., Hatchett, S. P., Le Pape, S., Mackinnon, A. J., McNaney, J. M., Meezan, N. B., Moran, M. J., Bradley, P. A., Kline, J. L., Krasheninnikova, N. S., Kyrala, G. A., Murphy, T. J., Schmitt, M. J., Tregillis, I. L., Batha, S. H., Knauer, J. P., & Kilkenny, J. D. Using multiple secondary fusion products to evaluate fuel ρR, electron temperature, and mix in deuterium-filled implosions at the NIF. United States. https://doi.org/10.1063/1.4928382
Rinderknecht, H. G., Rosenberg, M. J., Zylstra, A. B., Lahmann, B., Séguin, F. H., Frenje, J. A., Li, C. K., Gatu Johnson, M., Petrasso, R. D., Berzak Hopkins, L. F., Caggiano, J. A., Divol, L., Hartouni, E. P., Hatarik, R., Hatchett, S. P., Le Pape, S., Mackinnon, A. J., McNaney, J. M., Meezan, N. B., Moran, M. J., Bradley, P. A., Kline, J. L., Krasheninnikova, N. S., Kyrala, G. A., Murphy, T. J., Schmitt, M. J., Tregillis, I. L., Batha, S. H., Knauer, J. P., and Kilkenny, J. D. Tue . "Using multiple secondary fusion products to evaluate fuel ρR, electron temperature, and mix in deuterium-filled implosions at the NIF". United States. https://doi.org/10.1063/1.4928382. https://www.osti.gov/servlets/purl/1234575.
@article{osti_1234575,
title = {Using multiple secondary fusion products to evaluate fuel ρR, electron temperature, and mix in deuterium-filled implosions at the NIF},
author = {Rinderknecht, H. G. and Rosenberg, M. J. and Zylstra, A. B. and Lahmann, B. and Séguin, F. H. and Frenje, J. A. and Li, C. K. and Gatu Johnson, M. and Petrasso, R. D. and Berzak Hopkins, L. F. and Caggiano, J. A. and Divol, L. and Hartouni, E. P. and Hatarik, R. and Hatchett, S. P. and Le Pape, S. and Mackinnon, A. J. and McNaney, J. M. and Meezan, N. B. and Moran, M. J. and Bradley, P. A. and Kline, J. L. and Krasheninnikova, N. S. and Kyrala, G. A. and Murphy, T. J. and Schmitt, M. J. and Tregillis, I. L. and Batha, S. H. and Knauer, J. P. and Kilkenny, J. D.},
abstractNote = {In deuterium-filled inertial confinement fusion implosions, the secondary fusion processes D(3He,p)4He and D(T,n)4He occur, as the primary fusion products 3He and T react in flight with thermal deuterons. In implosions with moderate fuel areal density (~ 5–100 mg/cm2), the secondary D-3He reaction saturates, while the D-T reaction does not, and the combined information from these secondary products is used to constrain both the areal density and either the plasma electron temperature or changes in the composition due to mix of shell material into the fuel. The underlying theory of this technique is developed and applied to three classes of implosions on the National Ignition Facility: direct-drive exploding pushers, indirect-drive 1-shock and 2-shock implosions,and polar direct-drive implosions. In the 1- and 2-shock implosions, the electron temperature is inferred to be 0.65 x and 0.33 x the burn-averaged ion temperature, respectively. The inferred mixed mass in the polar direct-drive implosions is in agreement with measurements using alternative techniques.},
doi = {10.1063/1.4928382},
journal = {Physics of Plasmas},
number = 8,
volume = 22,
place = {United States},
year = {Tue Aug 25 00:00:00 EDT 2015},
month = {Tue Aug 25 00:00:00 EDT 2015}
}

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Works referencing / citing this record:

Nuclear diagnosis of the fuel areal density for direct-drive deuterium fuel implosion at the Shenguang-II Upgrade laser facility
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