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65T Short pulse science

65T Short pulse science. High magnetic- field scales and critical currents in SmFeAs(O , F) crystals Philip J. W. Moll et al Nature Vol 9, August 2010. 60T long pulse science. CeRhIn 5. Collaborators/users H.Q. Yuan – China E. Bauer – LANL, Los Alamos, USA. 300T single turn magnet.

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65T Short pulse science

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  1. 65T Short pulse science High magnetic-field scales and critical currents in SmFeAs(O, F) crystals Philip J. W. Moll et al Nature Vol 9, August 2010

  2. 60T long pulse science CeRhIn5 Collaborators/users H.Q. Yuan – China E. Bauer – LANL, Los Alamos, USA

  3. 300T single turn magnet. • Highest magnet field at the NHMFL 270T • 170T routine field at a cost of $120/shot (45 min/shot)

  4. Single walled carbon nanotubes in ultra-high magnetic fields. Ultra-High Magnetic Fields are used to dynamically align Single Walled Carbon Nano-Tubes (SWCNT) and to modify the electronic structure Magnetic field dependent traces of measured (purple) and simulated (black) normalized linear dichroismvs applied magnetic field. The hysteresis is indicative of the lag to the magnetic field produced by our poly- disperse length sample: (a) 56 T, ms-pulse, and (b) 140 T, pulse. C. Mielke, M. Altarawneh , S. Crooker, MPA-NHMFL, M. von Ortenberg, S. Hansel (Humboldt University), O. Portugall (LNCMP Toulouse, France), J. Shaver, L. Booshehri, A. N. G. Para-Vasquez, M. Pasquali, C. Pint, and J. Kono (Rice University) CNT’s align with the applied magnetic field due to their diamagnetic nature.

  5. Magneto-IR-resonance in graphene in ultra-high pulsed magnetic fields. • Data taken by L. Booshehri & C. H. Mielke using the Single-Turn Coil System at NHMFL, Los Alamos • Magneto-transmission measurements at 10.6 μm up to 170 T • Clear absorption resonance observed at ~60 T (not expected for undoped graphene)

  6. 300T single shot. Benefits to the program. • $4.2M + $2.0M into the NHMFL-PFF since 2003 from the Los Alamos Laboratory Directed Research and Development (LDRD) program. • 3 Postdocs & 4 Graduate students. • Advancements in signal to noise with proximity diode oscillator (Pdo) and Tunnel diode oscillator (Tdo) techniques. • FIR, Cyclotron resonance, Streak camera vis/spect & Supercontinuum White light generation capabilities. • Actinide sample handling and encapsulation.

  7. 300T single shot. The future. • No funding in the core grant to support the single shot program. • Weapons funds for dynamic high pressure measurements. • 3 external user experiments scheduled so far this year. • To expand the capabilities of the NHMFL-PFF the single turn program needs to be an integral part of the NSF user program. • Dedicated Staff scientist and Technician to improve existing and develop new techniques. ($500K/year). • Operating budget ($300K/year) Maintenance, cryogens, design and fabrication of new probes.

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