Hannover 2020 – scientific programme
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A: Fachverband Atomphysik
A 14: Poster Session - Atomic Physics II
A 14.30: Poster
Tuesday, March 10, 2020, 16:00–18:00, Empore Lichthof
Relativistic calculation of one Photoionization of neutral atom — •Jiahao Fan1, Jiri Hofbrucker1,2, Andrey Volotka2,3, and Stephan Fritzsche1,2 — 1Friedrich-Schiller-Universität Jena,Gemany — 2Helmholtz-Institut Jenam, Gemany — 3St. Petersburg State University, Russia
Photoionzation is one of the most fundamental atomic process which occurs in the light-matter interaction, and the most extensively studied. The neutral atom obtains the energy carried by a photon, and then the electron can be excited which has the corresponded Binding energy, and the electron is excited into continuum state and leaves a ion. Only photons that posses an energy corresponding to an ionization the electron transition of the system are absorbed, with a certain probability. This makes Photoionization very wavelength sensitive. My work is to verify and simulate the total cross section of this process within the framework of relativistic second-order Pertubation theory and independent particle approximation on Mathmatica, compare the different results in F, Ne and Na elements. Indeed I checked the different differential cross section distribution with different incoming photon energy.