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Title: Transport and spatial energy deposition of relativistic electrons in copper-doped fast ignition plasmas

Authors:
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Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1411681
Report Number(s):
LLNL-JRNL-736430
Grant/Contract Number:
AC52-07NA27344
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Transport and Spatial Energy Deposition of Relativistic Electrons in Copper-doped Fast Ignition Plasmas, vol. 24, na, October 24, 2017, pp. 102710
Additional Journal Information:
Journal Name: Transport and Spatial Energy Deposition of Relativistic Electrons in Copper-doped Fast Ignition Plasmas, vol. 24, na, October 24, 2017, pp. 102710
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 70 PLASMA PHYSICS AND FUSION

Citation Formats

Jarrott, L C, McGuffey, C, Beg, F N, Solodov, A A, Theobald, W, Qiao, B, Stoeckl, C, Betti, R, Chen, H, Delettrez, J, Doeppner, T, Giraldez, E M, Glebov, V Y, Habara, H, Iwawaki, T, Key, M H, Luo, R W, Marshall, F J, McLean, H S, Mileham, C, Patel, P K, Santos, J J, Sawada, H, Stephens, R B, Yabuuchi, T, and Wei, M S. Transport and spatial energy deposition of relativistic electrons in copper-doped fast ignition plasmas. United States: N. p., 2017. Web.
Jarrott, L C, McGuffey, C, Beg, F N, Solodov, A A, Theobald, W, Qiao, B, Stoeckl, C, Betti, R, Chen, H, Delettrez, J, Doeppner, T, Giraldez, E M, Glebov, V Y, Habara, H, Iwawaki, T, Key, M H, Luo, R W, Marshall, F J, McLean, H S, Mileham, C, Patel, P K, Santos, J J, Sawada, H, Stephens, R B, Yabuuchi, T, & Wei, M S. Transport and spatial energy deposition of relativistic electrons in copper-doped fast ignition plasmas. United States.
Jarrott, L C, McGuffey, C, Beg, F N, Solodov, A A, Theobald, W, Qiao, B, Stoeckl, C, Betti, R, Chen, H, Delettrez, J, Doeppner, T, Giraldez, E M, Glebov, V Y, Habara, H, Iwawaki, T, Key, M H, Luo, R W, Marshall, F J, McLean, H S, Mileham, C, Patel, P K, Santos, J J, Sawada, H, Stephens, R B, Yabuuchi, T, and Wei, M S. 2017. "Transport and spatial energy deposition of relativistic electrons in copper-doped fast ignition plasmas". United States. doi:. https://www.osti.gov/servlets/purl/1411681.
@article{osti_1411681,
title = {Transport and spatial energy deposition of relativistic electrons in copper-doped fast ignition plasmas},
author = {Jarrott, L C and McGuffey, C and Beg, F N and Solodov, A A and Theobald, W and Qiao, B and Stoeckl, C and Betti, R and Chen, H and Delettrez, J and Doeppner, T and Giraldez, E M and Glebov, V Y and Habara, H and Iwawaki, T and Key, M H and Luo, R W and Marshall, F J and McLean, H S and Mileham, C and Patel, P K and Santos, J J and Sawada, H and Stephens, R B and Yabuuchi, T and Wei, M S},
abstractNote = {},
doi = {},
journal = {Transport and Spatial Energy Deposition of Relativistic Electrons in Copper-doped Fast Ignition Plasmas, vol. 24, na, October 24, 2017, pp. 102710},
number = ,
volume = ,
place = {United States},
year = 2017,
month = 7
}

Journal Article:
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  • One of the most crucial steps for a fast ignition scenario is the energy deposition into the highly compressed deuterium-tritium core plasmas via intense laser-produced relativistic electrons. Based on fundamental principles, a kinetic model is developed by considering both binary collisions and the contribution due to collective process. The collision operator is exactly simplified by taking into account relativistic effects within the context of fast ignition. It is expressed in a differential form with the help of two analogous Rosenbluth potentials. The explicit formulation of a relativistic kinetic equation in three-dimensional momentum space is obtained by expanding the potential functionsmore » in terms of spherical harmonics, in which only simple differentiations and integrations are involved. Fast electron number is well conserved in this model. The range and penetration depth are also discussed.« less
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  • No abstract prepared.
  • The energy and angular distributions of the fast electrons predicted by particle-in-cell (PIC) simulations differ from those historically assumed in ignition designs of the fast ignition scheme. Using a particular 3D PIC calculation, we show how the ignition energy varies as a function of source-fuel distance, source size, and density of the pre-compressed fuel. The large divergence of the electron beam implies that the ignition energy scales with density more weakly than the ρ{sup −2} scaling for an idealized beam [S. Atzeni, Phys. Plasmas 6, 3316 (1999)], for any realistic source that is at some distance from the dense deuterium-tritiummore » fuel. Due to the strong dependence of ignition energy with source-fuel distance, the use of magnetic or electric fields seems essential for the purpose of decreasing the ignition energy.« less