X-ray spectroscopy and plasma diagnostics from the RESIK, RHESSI and SPIRIT instruments


Photos Home Programme Participants Abstracts Working Groups Flare Events LOC Sponsored by:	The synthetic emission spectra for the electron non-thermal distributions by using CHIANTI Elena Dzifčáková abstract: The purpose of this work has been to try to take the advantage of CHIANTI (database, software) to compute the synthetic spectrum for the non-thermal electron distributions. However, the CHIANTI database contains only the collision strengths averaged through Maxwellian distribution. The functional form of the approximation by Abramowitz and Stegun (1965) has been used to evaluate the approximation for Omega from CHIANTI by inverse technique. Computed Omega-s have been compared with known data. The modification of CHIANTI codes which uses derived approximations of Omega allows to compute synthetic spectra for the power and kappa electron distribution very quickly. The main variations in the synthetic spectrum for different distribution function are due to changes in the ionization equilibrium. The influence of the changes in excitation equilibrium is usually lower. The impact of the different non-thermal electron distribution on the synthetic spectrum is showed. Download: presentation (3.7 MB) RETURN