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Fast-Ignition Fuel-Assembly: Theory and Experiments R. Betti, C.D. Zhou, W. Theobald K. Anderson, A. Solodov Laboratory for Laser Energetics 5 th Fusion.

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Presentation on theme: "Fast-Ignition Fuel-Assembly: Theory and Experiments R. Betti, C.D. Zhou, W. Theobald K. Anderson, A. Solodov Laboratory for Laser Energetics 5 th Fusion."— Presentation transcript:

1 Fast-Ignition Fuel-Assembly: Theory and Experiments R. Betti, C.D. Zhou, W. Theobald K. Anderson, A. Solodov Laboratory for Laser Energetics 5 th Fusion Science Center Meeting February 28, Chicago, IL FSC

2 C. Zhou, W. Theobald, R. Betti, P.B. Radha, V. Smalyuk, C.K.Li et al, Phys. Rev. Lett. 98: (2007)

3 Arbitrary units Energy (MeV) 0 The maximum  R during the burn can be inferred from the downshift of the tail of the primary proton spectrum for targets with a 25 atm D-He3 fill 5MeV 14.7MeV Birth energy 9.7MeV  E - 1.5MeV * broadening = 8.2 MeV downshift DHe3 Primary Proton spectrum Fit of spectrum FSC

4 The areal density is measured during the burn. Protons from secondary D- 3 He reactions are slowed down by the shell areal density FSC C. Zhou, W. Theobald, R. Betti, P.B. Radha, V. Smalyuk, C.K.Li et al, Phys. Rev. Lett. 98: (2007)

5 FSC C. Zhou, W. Theobald, R. Betti, P.B. Radha, V. Smalyuk, C.K.Li et al, PRL98: (2007) DHe3 Secondary Proton spectrum Reconstructed spectra

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8 A complete set of hydro-scaling relations is derived for fast-ignition target design C.D. Zhou and R. Betti, submitted to Phys. Plasmas

9 Slow implosions lead to a low pressure, low temperature fuel assembly optimal for cone-in-shell targets FSC  Next step: slow implosions of cone-in-shell targets


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