Terry Kammash - NASA's Institute for Advanced Concepts

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Specific ImpulseNote improvement in energy transferefficiency for increasing (d/h), namelyfor larger aspect ratiosd/hln(d/h)V imax (m/s)Max I sp (s)51.619.7×10 79.7×10 7102.313.8×10 713.8×10 7503.9123.5×10 723.5×10 71004.6127.6×10 727.6×10 7
Accomplishments Thus Far1. Generate a Relativistically ConsistentMathematical Expression for the energyof the ejected ion as a function of laserand target parameters, i.e.E i =z √ηIRλwherez = ion chargeη = energy conversion efficiencyR = radius of focal spotλ = laser wave length
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 and 36: An ExampleI=10 21 W/cm 2η=0.10R=2.
Page 37: Plasma Expansion in VacuumIon accel
Page 41 and 42: Accomplishments Thus Far4. Experime

Terry Kammash - NASA's Institute for Advanced Concepts

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