Effect of Strongly Magnetized Electrons and Ions on Heat Flow and Symmetry of Inertial Fusion Implosions
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Author(s)
Bose, A.
Peebles, J.
Walsh, C.A.
Frenje, Johan A.
Kabadi, Neel V.
Adrian, Patrick J.
Sutcliffe, G.D.
Gatu Johnson, Maria
Frank, C.A.
Davies, J.R.
Date Issued
May 2022
Journal
Physical Review Letters
Publisher
APS
Abstract
This Letter presents the first observation on how a strong, 500 kG, externally applied B field increases the mode-two asymmetry in shock-heated inertial fusion implosions. Using a direct-drive implosion with polar illumination and imposed field, we observed that magnetization produces a significant increase in the implosion oblateness (a 2.5× larger P2 amplitude in x-ray self-emission images) compared with reference experiments with identical drive but with no field applied. The implosions produce strongly magnetized electrons (ωeτe ≫ 1) and ions (ωiτi > 1) that, as shown using simulations, restrict the cross field heat flow necessary for lateral distribution of the laser and shock heating from the implosion pole to the waist, causing the enhanced mode-two shape.
Description
Submitted for publication in Physical Review Letters
MIT Department
Massachusetts Institute of Technology. Plasma Science and Fusion Center
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/physrevlett.128.195002
