Speaker
Description
Detailed information about atomic excitation and decay processes are urgently required in many research fields in physics, science and elsewhere, from astro physics to (atomic) spectroscopy and metrology, to the development of light sources, and up to material science, to recall just a few of them [1]. More often than not, this information need to be obtained from atomic computations that are able to provide reliable data on demand. With the Jena Atomic Calculator (JAC), I have developed a relativistic structure code for the computation of atomic amplitudes, properties processed which is suitable for (most) open-shell atoms and ions across the periodic table [2,3].
In this talk, I explain a "pedestrian" route to modeling many, if not most, of these processes [4]. Apart from the frequently employed excitation and (auto-) ionization of atoms and ions, this includes rare processes, such as the collective Auger decay [5] or hyperfine-induced transitions. This route has been found helpful and equally accessible to working spectroscopists, theoreticians as well as code developers.
[1] S. Fritzsche, P. Palmeri and S. Schippers, Symmetry 13, 520 (2021)
[2] S. Fritzsche, Comp. Phys. Commun. 240, 1 (2019).
[3] https://github.com/OpenJAC/JAC.jl
[4] S. Fritzsche et al., Eur. J. Phys. D 78, 75 (2024).
[5] Y. Hikosaka and S. Fritzsche, PRL, in print (2025).
