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Obituary Otto Schärpf

Thomas Brückel (FZJ), Thomas Keller (MPI Festkörperforschung), Winfried Petry (TUM) and Helmut Schober (ILL)

Obituary of Ulrich Bonse

19 October 2022: The KFS honours the outstanding experimental physicist and vice chair of the first KFS

Obituary of Ulrich Bonse

The KFS honours its former member

Prof. Dr. Dr. h.c. Ulrich Bonse died on 11 October 2022 at the age of 94. He was a pioneer of X-ray interferometry and X-ray microtomography with synchrotron radiation and was involved in the KFS for many years in the early days of the committee - as vice-chair and as ESRF representative.

Prof. Bonse received his doctorate with distinction from the University of Münster in 1958 and habilitated there in 1963 with a thesis "On X-ray wave fields in weakly deformed crystal lattices". After a stay as Visiting Research Professor at Cornell University in Ithaca (USA), he was appointed to TU Dortmund University in 1970 and thus became a founding member of the Physics Faculty, which he continued to shape beyond the time of his retirement in 1993. He held the first chair of physics in Dortmund, the "Chair of Experimental Physics I", which at that time was assigned to the "Department of Mathematics Physics Chemistry". Later he was, among other things, Dean of the Faculty of Physics, Senator of the University and later Prorector for Research and Young Scientists. Prof. Bonse has received several awards for his research and his commitment to TU Dortmund University, e.g. an honorary doctorate from LMU Munich, the Physics Prize of the German Physical Society, the Bertram Eugen Warren Diffraction Physics Award of the American Crystallographic Association, and the title of Honorary Senator of TU Dortmund University.

Prof. Bonse's main research interests were X-ray interferometry and X-ray microtomography with synchrotron radiation, for which he received great national and international recognition. His research activities in Dortmund focused on high-resolution microtomography with X-rays and neutrons in the Ångstrom region. He is still a role model for many physicists working experimentally today.

In his honour, the Faculty of Physics has established a guest chair for instrumentation named after him, which allows the faculty to invite internationally distinguished scientists to TU Dortmund University for one semester at a time and to work there in research and teaching in the field of instrumentation.

With Professor Ulrich Bonse, the scientific community has lost a highly esteemed and popular colleague. The Committee Research with Synchrotron Radiation pays tribute to his services to research with synchrotron radiation and young scientists. Our sympathy goes to his relatives.

Obituary of Michael Steiner

KFN mourns the death of Prof. Dr. Michael Steiner and pays tribute to his services to German and international neutron research

Obituary of Michael Steiner

The Committee Research with Neutrons pays tribute to its former member


Prof. Dr. Michael Steiner passed away in Berlin on 5 November 2022 at the age of 79. With his passing, the research community loses a pioneer who helped shape the fate of neutron research in Germany and Europe for decades with great energy and a view to the future.

Michael Steiner was a member of the Committee Research with Neutrons (KFN) from 1987 to 2014 - first as a German observer in the Scientific Council of ISIS, then co-opted in his capacity as a member of the Steering Committee of ILL Grenoble, 1993-1999 as an elected member, finally as a representative of HMI (since 2008 HZB) and in recent years with great commitment as Chairman of the European Neutron Scattering Association (ENSA). As a magnetism expert and head of the Berlin research reactor BER II, he contributed to an intellectually stimulating research environment - not only in Berlin. His experiments on antiferromagnetically coupled spin chains made an important contribution to the theory of topological phase transitions, for which D. Haldane and M. Kosterlitz received the Nobel Prize in Physics in 2016. Steiner was a professor at the TU Berlin and the University of Mainz.

In the committee Research with Neutrons, Michael Steiner not only represented Berlin and German interests. International cooperation in research was an important concern for him. Therefore, he accompanied the planning of the European Spallation Source ESS, which is currently being built in Lund (Sweden), from the very beginning and always had the interests of the users in mind. As head of the European Neutron Scattering Association (ENSA), Michael Steiner even visited meetings of various European user representatives to get an idea of the different conditions on site.

We bid farewell to a highly esteemed colleague to whom we owe a great deal, and our thoughts are with his family.

[Obituary of the HZB]


Obituary Jürgen Kalus

Obituary Johann Peisl


Obituary Erich Steichele

Filed under: KFN, Nachrichtenkollektion