Energy and fluxes of thermal runaway electrons produced by exponential growth of streamers during the stepping of lightning leaders and in transient luminous events

S Celestin, VP Pasko - Journal of Geophysical Research …, 2011 - Wiley Online Library
In the present paper, we demonstrate that the exponential expansion of streamers
propagating in fields higher than the critical fields for stable propagation of streamers of a …

Lightning Observatory in Gainesville (LOG), Florida: A review of recent results

VA Rakov, S Mallick, A Nag, VB Somu - Electric Power Systems Research, 2014 - Elsevier
A review of several recent studies conducted at the Lightning Observatory in Gainesville
(LOG), Florida, is given, including (a) evaluation of field-to-current conversion equations,(b) …

The physics of lightning

VA Rakov - Surveys in Geophysics, 2013 - Springer
An overview of the physics of cloud-to-ground lightning is given, including its initiation,
propagation, and attachment to ground. Discharges artificially initiated (triggered) from …

A terrestrial gamma-ray flash recorded at the Lightning Observatory in Gainesville, Florida

MD Tran, VA Rakov, S Mallick, JR Dwyer, A Nag… - Journal of Atmospheric …, 2015 - Elsevier
A terrestrial gamma-ray flash (TGF) observed at ground level is presented. It was recorded at
the Lightning Observatory in Gainesville, Florida, on June 13, 2014. Ground-based …

A study of X‐ray emissions from thunderstorms with emphasis on subsequent strokes in natural lightning

S Mallick, VA Rakov, JR Dwyer - Journal of Geophysical …, 2012 - Wiley Online Library
X‐ray emissions associated with leaders of natural cloud‐to‐ground lightning are examined.
For 23 (8 first and 15 subsequent) strokes within 2 km of the Lightning Observatory in …

Ground-based observations of lightning-related X-ray/gamma-ray emissions in Florida: Occurrence context and new insights

VA Rakov, I Kereszy - Electric Power Systems Research, 2022 - Elsevier
Ground-based observations of energetic radiation (X-rays/gamma-rays) associated with
natural lightning discharges are presented and discussed. The emphasis is placed on …

Registration of X‐rays at 2500 m altitude in association with lightning flashes and thunderstorms

J Montanyà, F Fabró, O van der Velde… - Journal of …, 2014 - Wiley Online Library
Electric fields and high‐energy radiation of natural lightning measured at close range from a
mountaintop tower are discussed. In none of the 12 negative cloud‐to‐ground upward …

On the role of reduced air density along the lightning leader path to ground in increasing X‐ray production relative to normal atmospheric conditions

MD Tran, I Kereszy, VA Rakov… - Geophysical Research …, 2019 - Wiley Online Library
Abstract Mallick et al.(2012, https://doi. org/10.1029/2012JD017555) discovered that
subsequent‐stroke leaders in natural negative lightning could be more prolific producers of …

Direct observations of X-rays produced by upward positive lightning

T Oregel-Chaumont, A Šunjerga, P Hettiarachchi… - Scientific Reports, 2024 - nature.com
X-rays have been observed in natural downward cloud-to-ground lightning for over 20 years
and in rocket-triggered lightning for slightly less. In both cases, this energetic radiation has …

On the mechanism of X-ray production by dart leaders of lightning flashes

V Cooray, J Dwyer, V Rakov, M Rahman - Journal of atmospheric and solar …, 2010 - Elsevier
Radiation with energies up to about 250keV associated with the dart leader phase of rocket-
triggered lightning were reported by Dwyer et al.(2004). The mechanism of X-ray generation …