Effects of nonuniform illumination on implosion asymmetry in direct-drive inertial confinement fusion |
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| Authors: | Li C K Séguin F H Frenje J A Petrasso R D Delettrez J A McKenty P W Sangster T C Keck R L Soures J M Marshall F J Meyerhofer D D Goncharov V N Knauer J P Radha P B Regan S P Seka W |
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| Institution: | Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. |
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| Abstract: | Target areal density (rhoR) asymmetries in OMEGA direct-drive spherical implosions are studied. The rms variation / for low-mode-number structure is approximately proportional to the rms variation of on-target laser intensity / with an amplification factor of approximately 1/2(C(r)-1), where C(r) is the capsule convergence ratio. This result has critical implications for future work on the National Ignition Facility as well as OMEGA. |
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