Alpha heating and burning plasmas in inertial confinement fusion

Betti, R.; Christopherson, A. R.; Spears, B. K.; Nora, R.; Bose, A.; Howard, J.; Woo, K. M.; Edwards, M. J.; Sanz, J.

doi:10.1103/PhysRevLett.114.255003

Title: Alpha heating and burning plasmas in inertial confinement fusion

Journal Article · Mon Jun 01 00:00:00 EDT 2015 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.114.255003· OSTI ID:1197478

Betti, R. ^[1]; Christopherson, A. R. ^[1]; Spears, B. K. ^[2]; Nora, R. ^[2]; Bose, A. ^[1]; Howard, J. ^[1]; Woo, K. M. ^[1]; Edwards, M. J. ^[2]; Sanz, J. ^[3]

Univ. of Rochester, Rochester, NY (United States). Fusion Science Center and Lab. for Laser Energetics.
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Univ. Politecnica de Madrid. Madrid (Spain)

Estimating the level of alpha heating and determining the onset of the burning plasma regime is essential to finding the path towards thermonuclear ignition. In a burning plasma, the alpha heating exceeds the external input energy to the plasma. Using a simple model of the implosion, it is shown that a general relation can be derived, connecting the burning plasma regime to the yield enhancement due to alpha heating and to experimentally measurable parameters such as the Lawson ignition parameter. A general alpha-heating curve is found, independent of the target and suitable to assess the performance of all laser fusion experiments whether direct or indirect drive. The onset of the burning plasma regime inside the hot spot of current implosions on the National Ignition Facility requires a fusion yield of about 50 kJ.

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Research Organization:: Univ. of Rochester, Rochester, NY (United States). Lab. for Laser Energetics.

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: NA0001944; FC02-04ER54789

OSTI ID:: 1197478

Alternate ID(s):: OSTI ID: 1198525

Report Number(s):: DOE-LLE-1944-1229; PRLTAO; 2015-37; 2194; TIC-1229

Journal Information:: Physical Review Letters, Vol. 114, Issue 25; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 75 works

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References (17)

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