Observation of the Origin of Downward Terrestrial Gamma-ray Flashes in Initial Breakdown Pulses

Rasha Abbasi1, John Belz2, Paul R Krehbiel3, Ryan LeVon4, Jackson Remington5, William Rison6, Dan Rodeheffer7 and Mark A Stanley3, (1)Loyola University Chicago, Chicago, IL, United States, (2)University of Utah, Physics, SLC, UT, United States, (3)New Mexico Tech, Langmuir Laboratory for Atmospheric Research, Socorro, NM, United States, (4)University of Utah, Physics Department, Salt Lake City, UT, United States, (5)University of Utah, Physics, Salt Lake City, UT, United States, (6)New Mexico Inst Mining & Tech, Socorro, NM, United States, (7)New Mexico Institute of Mining and Technology, Socorro, NM, United States