Krzysztof Piotr Ruebenbauer (1947-2018) (27/04/18)

On Wednesday April 25,2018 Prof. Dr.habil. inż. Krzysztof Piotr Ruebenbauer passed away unexpectedly at the age of 70. Until last he was active in Mössbauer Spectroscopy. Only recently he became the first president of the new found Polish Society of Mössbauer Spectroscopy, which was a matter close of his heart.

Krzysztof Piotr RUEBENBAUER was born on 29 August 1947 in Cracow, studied at the Academy of Mining and Metallurgy and became his PhD at the Jagiellonian University in 1975. He worked first at the Institute of Nuclear Physics (1976-89) and then as Professor of Physics at the Pedagogical University in Cracow.
Early scientific activity of Krzysztof Ruebenbauer was concentrated on magnetically diluted rare earth Laves phase systems. A work on the highly sophisticated Mössbauer data processing software was started in late seventies. This work has been continued over many years resulting in the MOSGRAF package to process the Mössbauer spectra "from first principles". He was the "driving force" in development of series of high-precision and fully remote Moessbauer spectrometers - MsAa-x branch.

A series of papers has been devoted to the investigation of the diffusional correlation functions in various lattices. A high temperature emission Mössbauer spectroscopy has been mastered resulting in the pioneering measurements of the cobalt/iron diffusivity in beryllium, titanium dioxide or cobaltous oxide by means of the emission Mössbauer spectroscopy. Investigations of the anisotropy of the recoilless fraction focused attention as well and investigations of the recoilless fraction anisotropy were continued in his laboratory by various methods. In the last years he was engaged in exploring the field of Fe-based high-temperature superconductors.

Krzysztof Ruebenbauer was a passionate experimentalist, theoretician and a teacher. The Mössbauer community lost another early days passionate scientists.