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Luginsland - Plasma and Electro-energetic Physics - Spring Review 2013
Luginsland - Plasma and Electro-energetic Physics - Spring Review 2013
Luginsland - Plasma and Electro-energetic Physics - Spring Review 2013
Luginsland - Plasma and Electro-energetic Physics - Spring Review 2013
Luginsland - Plasma and Electro-energetic Physics - Spring Review 2013
Luginsland - Plasma and Electro-energetic Physics - Spring Review 2013
Luginsland - Plasma and Electro-energetic Physics - Spring Review 2013
Luginsland - Plasma and Electro-energetic Physics - Spring Review 2013
Luginsland - Plasma and Electro-energetic Physics - Spring Review 2013
Luginsland - Plasma and Electro-energetic Physics - Spring Review 2013
Luginsland - Plasma and Electro-energetic Physics - Spring Review 2013
Luginsland - Plasma and Electro-energetic Physics - Spring Review 2013
Luginsland - Plasma and Electro-energetic Physics - Spring Review 2013
Luginsland - Plasma and Electro-energetic Physics - Spring Review 2013
Luginsland - Plasma and Electro-energetic Physics - Spring Review 2013
Luginsland - Plasma and Electro-energetic Physics - Spring Review 2013
Luginsland - Plasma and Electro-energetic Physics - Spring Review 2013
Luginsland - Plasma and Electro-energetic Physics - Spring Review 2013
Luginsland - Plasma and Electro-energetic Physics - Spring Review 2013
Luginsland - Plasma and Electro-energetic Physics - Spring Review 2013
Luginsland - Plasma and Electro-energetic Physics - Spring Review 2013
Luginsland - Plasma and Electro-energetic Physics - Spring Review 2013
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Luginsland - Plasma and Electro-energetic Physics - Spring Review 2013

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Dr. John W. Luginsland presents an overview of his program, Plasma and Electro-energetic Physics, at the AFOSR 2013 Spring Review. At this review, Program Officers from AFOSR Technical Divisions will …

Dr. John W. Luginsland presents an overview of his program, Plasma and Electro-energetic Physics, at the AFOSR 2013 Spring Review. At this review, Program Officers from AFOSR Technical Divisions will present briefings that highlight basic research programs beneficial to the Air Force.

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  • 1. 1DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution14 February 2013 Integrity  Service  Excellence John W. Luginsland Program Officer AFOSR/RTB Air Force Research Laboratory Plasma and Electro- energetic Physics Date: 05 March 2013
  • 2. 2DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution Plasma and Electro-Energetic Physics NAME: John Luginsland , Plasma and Electro-energetic Physics BRIEF DESCRIPTION OF PORTFOLIO: Explore scientific opportunities in plasmas and electro-energetic physics where energy-dense objects powered by electromagnetic energy can provide new vistas in high-power electronics, plasma-enabled chemistry, and fluid/turbulence dynamics arenas Sub-area: High Power Microwave (HPM) sources, non-equilibrium plasmas, and pulsed power AFOSR AFOSR AFOSR
  • 3. 3DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution “What’s past is prologue…” 2008 Spring Review BRIEF DESCRIPTION OF PORTFOLIO: To advance the state-of- the-art in high power electronics for USAF applications in DEW, radar, EW, and communications. Sub-area: • HPM sources • Pulsed power • Cold plasma
  • 4. 4DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution Plasma and Electro-energetic Physics 5 mm NEP HPM/DE PP Often far from equilibrium
  • 5. 5DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution High Power Microwaves • HPM and vacuum electronics has demonstrated Pf2 (energy density) doubling every 26 month since 1930 – MW-GW, ~30-40% efficient, 0.1-1 µs • Emission physics fundamental physics for input power (Joint RD/RX/EOARD/AFOSR) 10-100µm diameter Substructure of nanotube super-ropes with 200-600nm diameter ~70-90% of the theoretical close-packing density for 1.0nm nanotubes RD RX/Rice
  • 6. 6DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution Recirculating Magnetron (U-Michigan and AFRL/RD) Conventional 12 vane magnetron Anode Cathode Conventional-polarity 20-vane RPM Anode Cathode • Larger cathode surface area provides higher current • Larger anode area allows for faster heat dissipation • RPM allows for nearly full electron beam recirculation • Planar cavities are decoupled from the anode- cathode and spacing • Magnetic field volume (V) scales linearly with # cavities (N) instead of (N2) as with cylindrical magnetron
  • 7. 7DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution Phase Control Phase locked for µs
  • 8. 8DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution Amplifiers vs Oscillators A Grand Challenge 80kW (10kW ave) Haystack/Warloc Fundamental challenge in mating high power (nonlinearity) and amplification (linearity) electron beamRF in RF out 30dB gain at 300W (200MHz BW) MIT
  • 9. 9DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution High Power MM for Transformation Optics
  • 10. 10DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution Non-Equilibrium Air Plasma Light from 3 µs discharge MIT for CHPM effort/Energy Transfer BRI Trot=450K~Tg Tvib=5000K
  • 11. 11DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution Novel Plasma Chemistry
  • 12. 12DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution Non-Equilibrium Plasma in Space NRL Space Chamber AFRL/RY Theory on LH and IAW
  • 13. 13DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution Strongly Coupled Plasma (Γ = 99 = PE/KE) Voss Sci/OSU Ultracold, neutral plasma
  • 14. 14DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution Strongly Coupled Plasma Zi = 25 mi = 56mp ne=1024 cm-3 T=Ti = Te Wigner-Seitz radius: a = (3/4πni)1/3 Coupling Parameter: Γ=Z2e2/akT Plasma typically defined by kinetic energy > ionization energy Strongly coupled plasma occurs when PE > KE BRI with T. Curcic + STTR Transition Voss Sci/OSU
  • 15. 15DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution Sample PIC simulation using the density decomposition scheme including a non-local three-body recombination event. Atomic processes in PIC Voss Sci/OSU
  • 16. 16DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution Energy Evolution (40 time step duration) Voss Sci/OSU
  • 17. 17DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution An Aside: Transformative Computation Tech-X (treecode for SCP on GPU) • 3 Recent Basic Research Initiatives (Curcic, Fahroo, JWL, Smith, Stargel) – Ultra-Scale and Fault-Resilient Algorithms: Mathematical Algorithms for Ultra- Parallel Computing – Transformational Computing via Co-Design of High-Performance Algorithms and Hardware – Transformational Computing in Aerospace Science and Engineering (Q. Algorithms for Physics) Software Spectrum Hardware Spectrum Requirements
  • 18. 18DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution Pulsed Power Science Challenges • Fundamental focus on transport of charge and energy through solid-state high-energy materials • MURI on Magnetic-Energy Conversion with Sayir • BRI on Metal-Dielectric Interfaces with Sayir • Engineer materials to provide competing characteristics of – Energy density (ε) – Rapid discharge capability – Breakdown Dielectric strength (E)
  • 19. 19DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution 0.44h Pulsed Power Successes S. Heidger, STAR team b Zhang, UM
  • 20. 20DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution New Initiatives and Resources Metal- dielectric Ultracold / strongly coupled Energy Transfer Magnetic Energy Conversion Ionosphere / Heaters Mat/Proc FarEquilCME Plasma Chem HP MM Rel Optics Influence of novel weapons Collaborations across AFOSR
  • 21. 21DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution Resources
  • 22. 22DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution AFOSR is the leading DOD 6.1 organization for non- equilibrium plasma physics, especially for HPM/vacuum electronics EM sources Collaborators/Teammates • Active collaborations with AFRL, ONR, ARL, DTRA, DARPA, NSF, DOE, and Air U • Joint project with DARPA in micro-plasmas • Close interactions with 9 LRIR, 3 MURI, and 11 BRI (fundamental sciences finds a wide range of collaborations) fs to hrs; nm to 100s km; solid-state energy/charge transport to plasma to WDM

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