Publications

Submitted

C. Köhn, S. Dujko, O. Chanrion and T. Neubert, Streamer propagation in the atmosphere of Titan and other N2:CH4 or N2:O2 mixtures
Submitted to Icarus, 2018, arxiv link

Published

C. Köhn, O. Chanrion and T. Neubert, High-Energy Emissions Induced by Air Density Fluctuations of Discharges
Geophys. Res. Lett., vol. 45, DOI:10.1029/2018GL077788 [10 pages], 2018, paper, supplementary material

M.H. Mamme, C. Köhn, J. Deconinck and J. Ustarroz, Numerical insights into the early stages of nanoscale electrodeposition: nanocluster surface diffusion and aggregative growth
Nanoscale, DOI: 10.1039/c7nr08529j [16 pages],2018, paper

C. Köhn, M.B. Enghoff and H. Svensmark, A 3D particle Monte Carlo approach to studying nucleation
J. Comp. Phys., vol. 363, pp. 30-38 [9 pages], 2018, paper, supplementary material

C. Köhn, O. Chanrion, L.P. Babich and T. Neubert, Streamer properties and associated x-rays in perturbed air
Plasma Sour. Sci. Technol., vol. 27, 015017 [13 pages], 2018, paper

C. Köhn, The Planck Length and the Constancy of the Speed of Light in Five Dimensional Spacetime Parametrized with Two Time Coordinates
Journal of High Energy Physics, Gravitation and Cosmology, vol. 3, pp. 635-650 [16 pages], 2017, paper

C. Köhn, O. Chanrion and T. Neubert, Electron acceleration during streamer collisions in air
Geophys. Res. Lett., vol. 44, pp. 2604-2613, doi:10.1002/2016GL072216 [10 pages], 2017, paper, supplementary material

C. Köhn, G. Diniz and M.N. Harakeh, Leptons, hadrons and photons and their feedback close to lightning leaders
J. Geophys. Res. Atmos., vol. 122, pp. 1365-1383, doi:10.1002/2016JD025445 [19 pages], 2017, paper

C. Köhn, O. Chanrion and T. Neubert, The influence of bremsstrahlung on electric discharge streamers in N2, O2 gas mixtures [PSST Highlight paper 2017]
Plasma Sour. Sci. Technol., vol. 26, 015006 [11 pages], 2017, paper, supplementary material

P. Kochkin, C. Köhn, U. Ebert and A.P.J. van Deursen, Analyzing X-ray emissions from meter-scale negative discharges in ambient air
Plasma Sour. Sci. Technol., vol. 25, 044002 [16 pages], 2016, paper

T.N.G. Trinh, O. Scholten, S. Buitink, A.M. van den Berg, A. Corstanje, U. Ebert, J.E. Enriquez, H. Falcke, J.R. Hörandel, C. Köhn, A. Nelles, J.P. Rachen, C. Rutjes, P. Schellart, S. Thoudam, K.D. de Vries, S. ter Veen, Influence of Atmospheric Electric Fields on Radio Emissions from Cosmic-Ray Induced Air Showers
Phys. Rev. D 93, 023003 [17 pages], 2016, paper

P. Schellart, T.N.G. Trinh, S. Buitink, A. Corstanje, J.E. Enriquez, H. Falcke, J.R. Hörandel, A. Nelles, J.P. Rachen, L. Rossetto, O. Scholten, S. ter Veen, S. Thoudam, U. Ebert, C. Köhn, C. Rutjes, and the LOFAR collaboration, Probing atmospheric electric fields in thunderstorms through radio emission from cosmic-ray induced air showers
Phys Rev. Lett., vol. 114, 165001 [5 pages], 2015, paper

C. Köhn and U. Ebert, Calculation of beams of positrons, neutrons and protons associated with terrestrial gamma-ray flashes
J. Geophys. Res. Atmos., vol. 120, pp. 1620-1635, doi:10.1002/2014JD022229 [16 pages], 2015, paper

C. Köhn and U. Ebert, The structure of ionization showers in air generated by electrons with 1 MeV energy or less
Plasma Sources Sci. Technol., vol. 23, 045001 [22 pages], 2014, paper

C. Köhn, U. Ebert and Alessio Mangiarotti, The importance of electron-electron Bremsstrahlung for terrestrial gamma-ray flashes, electron beams and electron-positron beams
J. Phys. D.: Appl. Phys. as Fast Track Communication, vol. 47, 252001 [6 pages], 2014, paper

C. Köhn and U. Ebert, Angular distribution of Bremsstrahlung photons and of positrons for calculations of terrestrial gamma-ray flashes and positron beams
Atmospheric Research, vol. 135-136, pp. 432-465 [34 pages], 2014, paper, cross section code

Proceeding Papers

On the role of steric effects in ECM. A theoretical study [8 pages], 2016. D. van Laethem, C. Köhn and J. Deconinck. International Symposium on Electrochemical Machining Technology (INSECT), Brussels, Belgium, Nov. 2016, paper

How density fluctuations influence the motion of streamers [1 page], 2016. C. Köhn, O. Chanrion and T. Neubert. Final TEA-IS conference, Copenhagen, Denmark, June 2016, paper

Energy resolved positron and hadron spectrum produced by a negative stepped lightning leader [2 pages], 2014. C. Köhn and U. Ebert. 2nd TEA-IS summer school, Collioure, France, June 2014, paper

Effects of atmospheric electric fields on radio emission from air showers [2 pages], 2014. T.N.G. Trinh, O. Scholten, A.M. van den Berg, S. Buiting, U. Ebert, C. Rutjes and C. Köhn. 2nd TEA-IS summer school, Collioure, France, June 2014

Cross sections and modelling results for high-energy radiation and positron beams produced within a thundercloud [2 pages], 2013. C. Köhn, U. Ebert. Int. Conf. Phenomena in Ionized Gases (ICPIG), Granada, July 2013, paper.

Energy resolved TGF- and positron spectrum produced by a negative stepped lightning leader [2 pages], 2012. Christoph Köhn and Ute Ebert. TEA-IS summer school, Torremolinos, Spain, June 2012, paper.

Modeling hard radiation from streamers and leaders and terrestrial gamma-ray flashes [3 pages], 2011. C. Li, C. Köhn, U. Ebert. Int. Conf. Phenomena in Ionized Gases (ICPIG), Belfast, Aug. 2011, paper.

Understanding electron run-away and hard radiation from streamers and lightning [4 pages], 2011. C. Li, C. Köhn, U. Ebert, W. Hundsdorfer Int. Conf. Atmospheric Electricity (ICAE), Rio de Janeiro, Brazil, Aug. 2011, paper.