Terry Kammash - NASA's Institute for Advanced Concepts

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Radioisotope Activation withProtonscollimator &shieldLaserCountstarget1000800600400200protonsSingles Spectrum11B (p,n)11CNaI PMTSampleNaI PMT••• • •• •• •• ••• •• • ••• • ••• • •••• • • • •• ••• •• •• •• • •• • • • • •• • • •• • • •• •• • • • ••••• • •••• • • •• •• • •• •• • • ••• • ••• • ••••• •• • •••••••••0.511 MeVSortwindow•••••••• •• • • • •• ••• • • • • ••• • • • • • • •• • • •• • • •••••0 • ••0 50 100 150 200 250 300Channelto MCAto MCACount (0.511 MeV)Count (0.511 MeV)30001000100100010010••••• • • • • • •• • • • • • • •• •• • • • • • ••100 200 400 600 800 1000• • •• ••••Laser Induced1111B (p, n) CTime (sec)Laser Induced63Cu (p,n) 63Zn•• • • ••• • • • • •• • • • • •• •• •• • • • • • ••••• •• • • •••• • • • • • • ••• • ••• •• • • • • • ••••••• •••• • •• • •••t ~ 38 min•• ••• •••10 2000 4000 6000 8000Time (sec)t = 20 min
Material Effect on ProtonProductionConductorAluminum• ρ~2.7 g/cm 3• σ=3.6×10 7 Ω -1 m -1• Z=13InsulatorMylar (polyethylene terephthalate C 10 H 8 O 4 )• ρ~1.2 g/cm 3• σ=10 -12 Ω -1 m -1• Z=4.3e -p + e - p +p +Ee -Elaserp + p + p +BtargetlaserBtarget
Page 1 and 2: Ultrafast Laser-DrivenPlasma for Sp
Page 3: Front Surface Deuteron Acceleration
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 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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