Photoionization of astrophysically relevant atomic ions at PIPE

TL;DR

This paper reviews recent experimental work on the photoionization of astrophysically relevant atomic ions using the PIPE setup at DESY, highlighting advances in understanding inner-shell ionization processes crucial for astrophysics.

Contribution

It presents new experimental data on inner-shell photoionization of various ions, demonstrating the effectiveness of the photon-ion merged-beams method at a leading synchrotron source.

Findings

Experimental data on L-shell photoionization of Fe ions

Experimental data on K-shell photoionization of C, Ne, Si ions

Demonstration of the photon-ion merged-beams method's breakthrough capabilities

Abstract

We review recent work on the photoionization of atomic ions of astrophysical interest that has been carried out at the photon-ion merged-beams setup PIPE, a permanently installed end station at the XUV beamline P04 of the PETRAIII synchrotron radiation source operated by DESY in Hamburg, Germany. Our results on single and multiple L-shell photoionization of Fe+, Fe2+, and Fe3+ ions and on single and multiple K-shell photoionization of C-, C+, C4+, Ne+, and Si2+ ions are discussed in astrophysical contexts. Moreover, these experimental results bear witness of the fact, that the implementation of the photon-ion merged-beams method at one of the world's brightest synchrotron light sources has led to a breakthrough for the experimental study of atomic inner-shell photoionization processes with ions.