Terry Kammash - NASA's Institute for Advanced Concepts

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Proton Energy Scaling with PulseDuration and Intensity14.5 MeVCurrentT-cubedSystem> 30 MeVFutureHERCULESSystemFrom Y. Sentoku, T. E. Cowan, A. Kemp, and H. RuhlPhysics of Plasmas 10, 2009 (2003)
Peak Proton Energyvs. Spot Size6000f/3.3 off-axis parabola5000f/1.5 off-axis parabolaPeak Proton Energy [keV]400030002000Power Scaling FitE =190.87 E = 190.87d x d 1.7404 1.704For intensities of ~2.5 x 10 19 W/cm 2For intensities of ~1.4 x 10 19 W/cm 2100003 3.5 4 4.5 5 5.5 6 6.5 7Spot size diameter [microns]
Page 1 and 2: Ultrafast Laser-DrivenPlasma for Sp
Page 3 and 4: Front Surface Deuteron Acceleration
Page 5 and 6: Material Effect on ProtonProduction
Page 7 and 8: (a) 4 µm, (b) 12.5 µm, (c) 25 µm
Page 9 and 10: Magnetic Field from Simulation vs.P
Page 11 and 12: Protons From Front Surface1614Maxim
Page 13: Deuteron AccelerationDeuteron coati
Page 17 and 18: Spot Size Comparison120Total Intens
Page 19 and 20: Plume Evolution in 1 Torr H 2Ambien
Page 21 and 22: Target GeometryWire orientation:~10
Page 23 and 24: Proton RadiographyThin Film TargetT
Page 25 and 26: Proton Acceleration Summary• Simu
Page 27 and 28: Physics ContinuedEnergy conservatio
Page 29 and 30: ContinuedThe Ion EnergyE i =ZE b =Z
Page 31 and 32: Two Asymptotic Regimes forIon Accel
Page 33 and 34: Relationship Between Ion Energy,Las
Page 35 and 36: An ExampleI=10 21 W/cm 2η=0.10R=2.
Page 37 and 38: Plasma Expansion in VacuumIon accel
Page 39 and 40: Accomplishments Thus Far1. Generate
Page 41 and 42: Accomplishments Thus Far4. Experime

Terry Kammash - NASA's Institute for Advanced Concepts

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