Year: 2015
Type: article
Abstract: We present version 8 of the CHIANTI database. This version includes a large amount of new data and ions, which represent a significant improvement in the soft X-ray, extreme UV (EUV) and UV spectral regions, which several space missions currently cover. New data for neutrals and low charge states are also added. The data are assessed, but to improve the modelling of low-temperature plasma the effective collision strengths for most of the new datasets are not spline-fitted as previously, but are retained as calculated. This required a change of the format of the CHIANTI electron excitation files. The format of the energy files has also been changed. Excitation rates between all the levels are retained for most of the new datasets, so the data can in principle be used to model high-density plasma. In addition, the method for computing the differential emission measure used in the CHIANTI software has been changed.
Language: English
Topic: Atomic and Molecular Physics
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Awards: G3207356259, G3467815775, G393177772, UK APAP Network, G4104599821, Measuring the Mass Flux and Magnetic Evolution of Jets in the Solar Atmosphere, G5702163051, RECENT MEASUREMENTS OF THE THERMAL STRUCTURE OF THE QUIET SUN FROM EM AND DEM ANALYSIS OF OFF-DISK PLASMAS SEEM TO SUGGEST THATTHE QUIET CORONAL PLA, CHIANTI IS A CRITICALLY-ASSESSED, FREELY-AVAILABLE ATOMIC DATABASE AND SOFTWARE PACKAGE THAT IS WIDELY-USED FOR THE INTERPRETATION AND ANALYSIS OF AS, UK APAP Network, SHINE: Differential Emission Measure Determination in Three-Dimension (3D) Using Atmospheric Imaging Assembly (AIA) Data, First European Comprehensive SOLar Irradiance Data exploitation
OpenAlex ID: W3103483197