Stephan Fritzsche

TL;DR: In this article, the 2s photoionization and subsequent Auger transition cascade in atomic Si were studied by means of synchrotron-radiation-induced electron spectroscopy.

TL;DR: In this paper, the authors used the Cowan code with semi-empirically scaled parameters and extensive MCDF computations to find 3s3p4, 3s2¯¯¯¯3�π2¯¯¯¯p2�3¯¯d and 3s 3p33d levels in the P-like ion Cu14+ (spectrum Cu XV), which have never been observed before.

TL;DR: In this paper, the degree of polarization of a two-photon ionization was investigated at specific incident beam energy due to a zero contribution of the dominant ionization channel, and it was shown that the degree depends less on the beam parameters, and its measurements at this specific beam energy are highly desirable for evaluation of theoretical calculations of nonlinear ionization at hitherto unreachable accuracy.

TL;DR: In this paper, single-photon ionization leading to two vacancies in the 2p subshell of argon is investigated experimentally using the photoelectron time-of-flight magnetic bottle coincidence technique.

TL;DR: In this paper, the Compton polarimeter has been used for hard x-ray polarimetry of radiation emitted in collisions of heavy ions, electrons or photons with matter, which provides detailed information on the collision dynamics as well as of the atomic structure in the presence of extreme field strengths.