Compaction 1 Deterioration 1 Dissociation 1 Electric discharges 1 Electron energy levels 1 Electron spectral resolution 1 Electron swarm 1 Electrons 1 HTTP 1 Importance sampling 1 Monte-Carlo Particle energy 1 Roulette/splitting 1 Spectra's 1 Splittings 1 Stochastic systems 1 Super-particle compaction 1 Target super-spectrum 1 Thermal runaway 1 Thermal runaways 1 Variance reduction 1 Variance reductions 1