Greg S. Jenkins

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The potential enhancement of tropospheric column ozone values over the Tropical Atlantic Ocean on a seasonal basis by lightning is investigated using satellite derived ozone data, TRMM lightning data, ozonesonde data and NCEP reanalysis during 1998–2001. Our results show that the number of lightning flashes in Africa and South America reach a maximum during(More)
The complex Faraday angle and transmission for the topological insulator Bi2Se3 were measured in the far infrared in magnetic fields up to 8 T and analyzed in terms of a simple Drude-Lorentz magnetoplasma dielectric model. Bulk carriers dominate the optical response. The bulk carriers are electrons as we determined from the sign of the Faraday angle. We(More)
A sensitive mid-infrared (MIR, 900-1100 cm−1, 112-136 meV) photoelastic polarization modulation technique is used to measure simultaneously Faraday rotation and circular dichroism in thin metal films. These two quantities determine the complex AC Hall conductivity. This novel technique is applied to study Au and Cu thin films at temperatures down to 20 K(More)
D. C. Schmadel,1,* G. S. Jenkins,1,* J. J. Tu,2,3 G. D. Gu,3 Hiroshi Kontani,4 and H. D. Drew1,5 1Department of Physics, University of Maryland, College Park, Maryland 20742, USA 2Department of Physics, City University of New York, New York, New York 11973, USA 3Department of Physics, Brookhaven National Laboratory, Upton, New York 11973, USA 4Department of(More)
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