D. J. Brenner and C. D. Elliston, Estimated Radiation Risks Potentially Associated with Full-Body CT Screening, Radiology, vol.232, issue.3, pp.735-738, 2004.
DOI : 10.1148/radiol.2323031095

S. Celestin and V. P. Pasko, Energy and fluxes of thermal runaway electrons produced by exponential growth of streamers during the stepping of lightning leaders and in transient luminous events, Journal of Geophysical Research: Space Physics, vol.49, issue.21, pp.331510-1029, 2011.
DOI : 10.1103/PhysRevE.49.5574

S. Celestin, W. Xu, and V. P. Pasko, Terrestrial gamma ray flashes with energies up to 100 MeV produced by nonequilibrium acceleration of electrons in lightning, Journal of Geophysical Research: Space Physics, vol.39, issue.1, pp.531510-1029, 2012.
DOI : 10.1029/2012GL051351

J. R. Dwyer, Implications of x-ray emission from lightning, Geophysical Research Letters, vol.28, issue.D16, pp.10-1029, 2004.
DOI : 10.1029/2004GL019795

J. R. Dwyer and D. M. Smith, A comparison between Monte Carlo simulations of runaway breakdown and terrestrial gamma-ray flash observations, Geophysical Research Letters, vol.22, issue.20, pp.10-1029, 2005.
DOI : 10.1029/2004GL021802

J. R. Dwyer, Energetic Radiation Produced During Rocket-Triggered Lightning, Science, vol.299, issue.5607, pp.694-697, 2003.
DOI : 10.1126/science.1078940

J. R. Dwyer, Measurements of x-ray emission from rocket-triggered lightning, Geophysical Research Letters, vol.31, issue.D16, pp.10-1029, 2004.
DOI : 10.1029/2003GL018770

J. R. Dwyer, X-ray bursts associated with leader steps in cloud-to-ground lightning, Geophysical Research Letters, vol.22, issue.20, pp.10-1029, 2005.
DOI : 10.1029/2004GL021782

J. R. Dwyer, D. M. Smith, M. A. Uman, Z. Saleh, B. Grefenstette et al., Estimation of the fluence of high-energy electron bursts produced by thunderclouds and the resulting radiation doses received in aircraft, Journal of Geophysical Research, vol.22, issue.20, p.920610, 1029.
DOI : 10.1029/2009JD012039

J. R. Dwyer, M. Schaal, H. K. Rassoul, M. A. Uman, D. M. Jordan et al., High-speed X-ray images of triggered lightning dart leaders, Journal of Geophysical Research, vol.22, issue.5, pp.2020810-1029, 2011.
DOI : 10.1029/2011JD015973

G. J. Fishman, Discovery of Intense Gamma-Ray Flashes of Atmospheric Origin, Science, vol.264, issue.5163, pp.264-1313, 1994.
DOI : 10.1126/science.264.5163.1313

W. Heitler, The Quantum Theory of Radiation, 1954.

J. Howard, M. A. Uman, J. R. Dwyer, D. Hill, C. Biagi et al., Co-location of lightning leader x-ray and electric field change sources, Geophysical Research Letters, vol.22, issue.13, p.1381710, 1029.
DOI : 10.1029/2008GL034134

J. Howard, M. A. Uman, C. Biagi, D. Hill, J. Jerauld et al., RF and X-ray source locations during the lightning attachment process, Journal of Geophysical Research, vol.5, issue.C12, p.620410, 1029.
DOI : 10.1029/2009JD012055

G. F. Knoll, Radiation Detection and Measurement, 2010.

N. G. Lehtinen, Relativistic runaway electrons above thunderstorms, 2000.

T. C. Marshall, M. Stolzenburg, W. D. Rust, E. R. Williams, and R. Boldi, Positive charge in the stratiform cloud of a mesoscale convective system, Journal of Geophysical Research: Atmospheres, vol.105, issue.D1, pp.1157-116410, 2001.
DOI : 10.1029/2000JD900625

C. B. Moore, K. B. Eack, G. D. Aulich, and W. Rison, Energetic radiation associated with lightning stepped-leaders, Geophysical Research Letters, vol.22, issue.11, pp.2141-214410, 2001.
DOI : 10.1029/2001GL013140

N. Østgaard, T. Gjesteland, J. Stadsnes, P. H. Connell, and B. Carlson, Production altitude and time delays of the terrestrial gamma flashes: Revisiting the Burst and Transient Source Experiment spectra, Journal of Geophysical Research: Space Physics, vol.33, issue.A2, pp.230710-1029, 2008.
DOI : 10.1029/2005GL025537

M. Pelliccioni, Overview of Fluence-to-Effective Dose and Fluence-to-Ambient Dose Equivalent Conversion Coefficients for High Energy Radiation Calculated Using the FLUKA Code, Radiation Protection Dosimetry, vol.88, issue.4, pp.279-297, 2000.
DOI : 10.1093/oxfordjournals.rpd.a033046

Z. Saleh, J. Dwyer, J. Howard, M. Uman, M. Bakhtiari et al., Properties of the X-ray emission from rocket-triggered lightning as measured by the Thunderstorm Energetic Radiation Array (TERA), Journal of Geophysical Research, vol.22, issue.5, p.1721010, 1029.
DOI : 10.1029/2008JD011618

M. M. Schaal, J. R. Dwyer, Z. H. Saleh, H. K. Rassoul, J. D. Hill et al., Spatial and energy distributions of X-ray emissions from leaders in natural and rocket triggered lightning, Journal of Geophysical Research: Atmospheres, vol.22, issue.D5, p.1520110, 1029.
DOI : 10.1029/2008JD011618

M. M. Schaal, The structure of X-ray emissions from triggered lightning leaders measured by a pinhole-type X-ray camera, Journal of Geophysical Research: Atmospheres, vol.19, issue.D12, pp.982-100210, 2014.
DOI : 10.1029/2012JD017897

W. Xu, S. Celestin, and V. P. Pasko, Source altitudes of terrestrial gamma-ray flashes produced by lightning leaders, Geophysical Research Letters, vol.111, issue.5163, pp.10-1029, 2012.
DOI : 10.1029/2005JD006447