Terry Kammash - NASA's Institute for Advanced Concepts

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Simulation of proton beamSentoku’s[1] recent 1-D PICsimulations predict a 5 MeVbeam from the front surface<strong>for</strong> a 400fs laser pulse, withabout 13 MeV from the rear.This agrees well with theobserved 4 MeV trend, and amaximum of about 12 MeV.[1] Y. Sentoku Phys.Plasmas 10 2009 (2003)
Deuteron AccelerationDeuteron coatingd + p +Preliminary ResultsNo deuteron coatingp +Where do highest energy deuterons come from?1. The BACK of 12.5um Al2. The FRONT of 6 um Mylar3. The FRONT of 13 um Mylar4. The FRONT of 12.5 um Al5. The BACK of 13 um Mylar
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: Protons From Front Surface1614Maxim
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 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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