Terrestrial Gamma Flashes Observed from Nearby Thunderstorms at Ground Level

Michael L Cherry1, Nicholas Chason2, Douglas Granger3, T Gregory Guzik3, Donald Pleshinger2, James Rodi2, J Gregory Stacy2, Michael Stewart1 and Natalie Zimmer1, (1)Louisiana State University, Physics & Astronomy, Baton Rouge, LA, United States, (2)Louisiana State University, Baton Rouge, LA, United States, (3)Louisiana State University, Physics and Astronomy, Baton Rouge, LA, United States
Abstract:
The TGF and Energetic Thunderstorm Rooftop Array (TETRA) is an array of NaI scintillators located on the campus of Louisiana State University in Baton Rouge, Louisiana. Since July 2010, TETRA has detected 37 millisecond bursts of gamma rays at energies 50 keV – 2 MeV associated with nearby (< 8 km) thunderstorms. The ability to observe ground-level Terrestrial Gamma Flashes from close to the source allows a unique analysis of the storm cells producing these events. A description of the observations, the results of the analysis, and plans for future measurements will be presented.
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