Jürgen Uhlenbusch

Jürgen Uhlenbusch (born February 2, 1935 in Eitorf ) is a German physicist emeritus and university professor.

Life

Jürgen Uhlenbusch studied physics at RWTH Aachen University from 1955 to 1960 , with Wilhelm Fucks and Josef Meixner among others . In his doctoral thesis he developed methods for the computer-aided calculation of the state variables and fields in stationary and time-modulated arc plasmas. After completing his doctoral thesis in 1962, he worked as an assistant at the chair for experimental physics at RWTH Aachen University under Wilhelm Fucks and developed high-performance arc experiments with the aim of measuring the transport coefficients of thermal and non-thermal plasmas . In order to carry out space-resolved measurements in the plasma, laser diagnostic methods, for example Thomson scattering on stationary discharges, combined with digital data acquisition had to be introduced for the first time. The development of powerful infrared lasers has significantly expanded the laser diagnostic activities.

In 1966 he completed his habilitation in plasma physics. In 1971 he was appointed Scientific Councilor and Professor at RWTH Aachen University. In 1972 he followed a call to a full professorship at the newly founded Physics Institute II at the University of Düsseldorf . The new start in Düsseldorf offered the opportunity to significantly expand the research areas. In close cooperation with industry, a high-performance CO ₂ laser was developed that was used for material processing (welding and cutting), but also for generating a high-pressure plasma (optical discharge).

Different types of discharges with and without a magnetic field, mainly powered by microwaves, were put into operation to study their plasma-technological and plasma-chemical applications. Including the tokamak Unitor , in which, in cooperation with JET, the effectiveness of beryllium coatings on the discharge wall and the limiter was demonstrated for the first time. The Tokamak Unitor is now operated under the name Egyptor at the National Research Center in Cairo .

As an associate professor at the TH Eindhoven (1981–1985), Uhlenbusch supported the construction of a magnetohydrodynamic generator. From 1990 to 1999 he worked as director at the IPP at Forschungszentrum Jülich in the field of plasma-wall interaction. In addition to his scientific activity, in which the employees Jobst Hackmann, Helmut Kempkens, Johannes H. Schäfer and Wolfgang Viöl also played a key role, he took on tasks in the self-administration of the University of Düsseldorf as dean and vice dean of the mathematical and natural science faculty (1980–1982) . From 1985 to 1995 he was Vice-Rector for Research and Young Scientists. In addition, he was and is active on the boards of trustees of several foundations. From 1981 to 2010 he took on the task of working as scientific director of the physics events and from 2005 to 2010 as vice-president of the board of trustees for the meeting of the Nobel Prize winners in Lindau .

Uhlenbusch is married and has one child.

Honors

• In 1962, RWTH Aachen awarded him the Borchers plaque for having passed the doctoral examination with distinction.
• In 1997 he was awarded the Cross of Merit on Ribbon of the Order of Merit of the Federal Republic of Germany .
• In 1999 the Institute of Physics (IOP) made him a Fellow and in 2012 a Chartered Physicist .

Fonts (selection)

He published the research results resulting from the investigations in over 250 scientific publications, 8 book chapters, one book and several patents .

Selected Books

• McGowan, J.Wm., John, PK, Gaseous Electronics-Some Applications, North Holland Amsterdam (1974), paper on non-thermal arc plasmas.
• Bergmann / Schaefer: Textbook of Experimental Physics Volume 5: Gases, Nanosystems, Liquids. First edition: many-particle systems. (1992), current 2nd edition, ed. by Karl Kleinermanns ISBN 3-11-017484-7 , de Gruyter (2006), article about low temperature plums.
• K.-H. Spatschek and J. Uhlenbusch, Contributions to High- Temperature Plasma Physics, Wiley-VCH (1998)
• J. Uhlenbusch, Our environment in sight, Shaker Media (2010), ISBN 978-3-86858-531-5 .

Selected publications

• J. Uhlenbusch, Z. Physik, 179, 347 (1965)
• Uhlenbusch, J. and Detloff, L., The Behavior of Cylindrical AC Arcs with Thermal Reignition Phenomena in Ionized Gases (1967). Proceedings of the Eighth International Conference held August 27 - September 2 (1967), in Vienna, Austria.
• D. Baum, J. Hackmann and J. Uhlenbusch, Plasma Physics, Vol. 17 (1975), 79-87
• J. Uhlenbusch, J. Dahm Laser + Elektrooptik, No. 1 (1976)
• H. Kempkens and J. Uhlenbusch, Physica 95C (1978), 277-284
• C. Carlhoff, JH Schäfer, K. Schildbach and J. Uhlenbusch JOURNAL DE PHYSIQUE, Tome 40 (1979)
• J. Hackmann and J. Uhlenbusch Nucl. Fusion 24, 640 (1984) Experimental study of the compatibility of beryllium limiters with a tokamak plasma
• C. Carlhoff, E. Krametz, JH Schäfer, J. Uhlenbusch, J.Phys.B: At. Mol. Phys. 19, 2629 (1986)
• JH Schäfer, J. Uhlenbusch, W. Viöl, Aluminum 65 (5), 501 (1989)
• J. Uhlenbusch, W. Viöl, Contributions to Plasma Physics, 29, 459 (1989)
• H. Kempkens, J. Uhlenbusch, Plasma Sources Sci. Technol., 9 (2000), Scattering diagnostics of low-temperature plasmas
• D. Hemmers, H. Kempkens, J. Uhlenbusch J.Phys. D: Appl. Phys. 34, 2315 (2001)

Web links

• Website of Prof. em. Dr. J. Uhlenbusch at the University of Düsseldorf