Terry Kammash - NASA's Institute for Advanced Concepts

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ThrustF=N i M i ωV iM i = ion mass (proton) = 1.6 ×10 -27 kgω = representation rate ≈ 1kHzV i = ion velocity (14 MeV) = 5.2×10 7 m/s
Plasma Expansion in VacuumIon acceleration timet i =h/v i = 19×10 -15 secPulse length (projected)τ=30×10 -15Thenτ>t i Expansion is Isothermalv i max = 2 C S ln(d/h)C S = √ZT e /m i =3×10 7 m/secv i max = 10 8 m/secV i initial ≈ 5×10 7 m/sec
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 and 14: Deuteron AccelerationDeuteron coati
Page 15 and 16: Peak Proton Energyvs. Spot Size6000
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: An ExampleI=10 21 W/cm 2η=0.10R=2.
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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