Helmut Rauch

Helmut Rauch (22 January 1939 – 2 September 2019) was an Austrian physicist. He was especially known for his pioneering experiments on neutron interference. 

Rauch studied Physics at Vienna University of Technology and worked at the Institute of Atomic and Subatomic Physics there. He was also affiliated with the Forschungszentrum Jülich and the Institut Laue-Langevin in Grenoble.

Neutron interference experiments 
In 1974, Rauch, together with Ulrich Bonse and Wolfgang Treimer, demonstrated the first matter wave interference of neutrons. This demonstrated the wave-like nature of neutrons for the first time and was another experimental proof that not only photons can be described by waves, but also massive particles. Further they demonstrated the fundamental symmetry of spin 1/2 particles under rotation.

Death
Rauch died on 2 September 2019, aged 80, following a short illness in Vienna.

References

External links 
 Wittgenstein-Preis für Helmut Rauch 7 October 2006 in ORF Wien (in German), last visited 25 April 2009
 Helmut Rauch on the Homepage of the Austrian Research Agency (in German), last visited 25 April 2009

Category:1939 births
Category:Austrian physicists
Category:2019 deaths
Category:TU Wien alumni