
Max Christian Theodor Steenbeck (21 March 1904 – 15 December 1981) was a German physicist who worked at the ''
Siemens-Schuckertwerke'' in his early career, during which time he invented the
betatron
A betatron is a type of cyclic particle accelerator. It is essentially a transformer with a torus-shaped vacuum tube as its secondary coil. An alternating current in the primary coils accelerates electrons in the vacuum around a circular path. Th ...
in 1934. He was taken to the
Soviet Union
The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, ...
after
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great power ...
, and he contributed to the
Soviet atomic bomb project
The Soviet atomic bomb project was the Classified information in Russia, classified research and development program that was authorized by Joseph Stalin in the Soviet Union to develop nuclear weapons during and after World War II.
Although th ...
. In 1955, he returned to
East Germany
East Germany, officially the German Democratic Republic (GDR; german: Deutsche Demokratische Republik, , DDR, ), was a country that existed from its creation on 7 October 1949 until its dissolution on 3 October 1990. In these years the state ...
to continue a career in
nuclear physics
Nuclear physics is the field of physics that studies atomic nuclei and their constituents and interactions, in addition to the study of other forms of nuclear matter.
Nuclear physics should not be confused with atomic physics, which studies the ...
.
Early life
Steenbeck was born in
Kiel
Kiel () is the capital and most populous city in the northern German state of Schleswig-Holstein, with a population of 246,243 (2021).
Kiel lies approximately north of Hamburg. Due to its geographic location in the southeast of the Jutland pe ...
. He studied
physics
Physics is the natural science that studies matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department of knowledge which rel ...
and
chemistry at the
University of Kiel
Kiel University, officially the Christian-Albrecht University of Kiel, (german: link=no, Christian-Albrechts-Universität zu Kiel, abbreviated CAU, known informally as Christiana Albertina) is a public research university in the city of Kiel, G ...
from 1922 to 1927. He completed his thesis on
x-rays
X-rays (or rarely, ''X-radiation'') are a form of high-energy electromagnetic radiation. In many languages, it is referred to as Röntgen radiation, after the German scientist Wilhelm Conrad Röntgen, who discovered it in 1895 and named it ' ...
under
Walther Kossel
Walther Ludwig Julius Kossel (4 January 1888 – 22 May 1956) was a German physicist known for his theory of the chemical bond ( ionic bond/octet rule), Sommerfeld–Kossel displacement law of atomic spectra, the Kossel-Stranski model for crystal ...
; he submitted the thesis in 1927/1928 and his doctorate was awarded in January 1929.
While a student at Kiel, he formulated the concept of the
cyclotron
A cyclotron is a type of particle accelerator invented by Ernest O. Lawrence in 1929–1930 at the University of California, Berkeley, and patented in 1932. Lawrence, Ernest O. ''Method and apparatus for the acceleration of ions'', filed: J ...
.
Career
Early years
From 1927 to 1945, Steenbeck was a physicist at the ''
Siemens-Schuckertwerke'' in
Berlin
Berlin is Capital of Germany, the capital and largest city of Germany, both by area and List of cities in Germany by population, by population. Its more than 3.85 million inhabitants make it the European Union's List of cities in the European U ...
. From 1934, he was a laboratory director, and it was in that year that he submitted a patent for the
betatron
A betatron is a type of cyclic particle accelerator. It is essentially a transformer with a torus-shaped vacuum tube as its secondary coil. An alternating current in the primary coils accelerates electrons in the vacuum around a circular path. Th ...
. In 1943, he was appointed technical director of a static converter plant at Siemens, conducting research in gas-discharge physics. Additionally, at his plant, he was head of the
Volkssturm
The (; "people's storm") was a levée en masse national militia established by Nazi Germany during the last months of World War II. It was not set up by the German Army, the ground component of the combined German ''Wehrmacht'' armed forces, ...
(people's army), the organised civilian resistance at the plant, which was to, as a last resort, defend the territory.
In the Soviet Union
At the close of
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great power ...
he was arrested by the Soviet military forces, and he was incarcerated at a concentration camp in
Poznań
Poznań () is a city on the River Warta in west-central Poland, within the Greater Poland region. The city is an important cultural and business centre, and one of Poland's most populous regions with many regional customs such as Saint Joh ...
. He wrote to the
NKVD
The People's Commissariat for Internal Affairs (russian: Наро́дный комиссариа́т вну́тренних дел, Naródnyy komissariát vnútrennikh del, ), abbreviated NKVD ( ), was the interior ministry of the Soviet Union.
...
and explained his scientific background. Eventually, he was taken to recuperate at the dacha Opalicha at the end of 1945, after which he was sent to work at
Manfred von Ardenne’s Institute A, in Sinop, a suburb of
Sukhumi
Sukhumi (russian: Суху́м(и), ) or Sokhumi ( ka, სოხუმი, ), also known by its Abkhaz name Aqwa ( ab, Аҟәа, ''Aqwa''), is a city in a wide bay on the Black Sea's eastern coast. It is both the capital and largest city of ...
. He headed a group working on both electromagnetic and
centrifugal
Centrifugal (a key concept in rotating systems) may refer to:
*Centrifugal casting (industrial), Centrifugal casting (silversmithing), and Spin casting (centrifugal rubber mold casting), forms of centrifigual casting
*Centrifugal clutch
*Centrifu ...
isotope separation
Isotope separation is the process of concentrating specific isotopes of a chemical element by removing other isotopes. The use of the nuclides produced is varied. The largest variety is used in research (e.g. in chemistry where atoms of "marker" ...
for the enrichment of
uranium
Uranium is a chemical element with the symbol U and atomic number 92. It is a silvery-grey metal in the actinide series of the periodic table. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons. Uranium is weakly ...
, with the latter having the highest priority. Steenbeck and his group were pioneers in the development of supercritical centrifuges. Steenbeck’s group, at its largest, included from 60 to 100 German and Russian personnel. Steenbeck was kept in the Soviet Union until 1956, when he went to
East Germany
East Germany, officially the German Democratic Republic (GDR; german: Deutsche Demokratische Republik, , DDR, ), was a country that existed from its creation on 7 October 1949 until its dissolution on 3 October 1990. In these years the state ...
.
While Steenbeck developed the theory of the centrifugal isotope separation process,
Gernot Zippe
Gernot Zippe (November 1917 – 7 May 2008) was an Austrian born German mechanical engineer who is widely credited with leading the team which developed the Zippe-type centrifuge, a centrifuge machine for the enrichment and collection of U ...
, an
Austria
Austria, , bar, Östareich officially the Republic of Austria, is a country in the southern part of Central Europe, lying in the Eastern Alps. It is a federation of nine states, one of which is the capital, Vienna, the most populous ...
n, headed the experimental effort in Steenbeck’s group. Zippe, a
POW
A prisoner of war (POW) is a person who is held captive by a belligerent power during or immediately after an armed conflict. The earliest recorded usage of the phrase "prisoner of war" dates back to 1610.
Belligerents hold prisoners of ...
from the
Krasnogorsk Krasnogorsk may refer to one of the following:
*Krasnogorsk Urban Settlement, a municipal formation which the City of Krasnogorsk in Krasnogorsky District of Moscow Oblast, Russia is incorporated as
* Krasnogorsk, Russia, several inhabited localiti ...
camp, joined the group in the summer of 1946. Zippe returned to Germany in 1956. In 1957, he attended a conference on centrifugal isotope separation; it was then that he realized how advanced the work had been in Steenbeck’s group, and Zippe then applied for a patent on short-bowl centrifuge technology, known as the
Zippe-type centrifuge
The Zippe-type centrifuge is a gas centrifuge designed to enrich the rare fissile isotope uranium-235 (235U) from the mixture of isotopes found in naturally occurring uranium compounds. The isotopic separation is based on the slight difference in ...
. He was invited to repeat the experiments at the
University of Virginia
The University of Virginia (UVA) is a public research university in Charlottesville, Virginia. Founded in 1819 by Thomas Jefferson, the university is ranked among the top academic institutions in the United States, with College admission ...
. Shortly after completing the work, at the request of the United States, all centrifuge research in Germany became classified on August 1, 1960. The work of Steenbeck and Zippe shaped
Europe
Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a subcontinent of Eurasia and it is located enti ...
an and
Japanese enrichment processes and later those in
Pakistan
Pakistan ( ur, ), officially the Islamic Republic of Pakistan ( ur, , label=none), is a country in South Asia. It is the world's List of countries and dependencies by population, fifth-most populous country, with a population of almost 24 ...
and
Iraq
Iraq,; ku, عێراق, translit=Êraq officially the Republic of Iraq, '; ku, کۆماری عێراق, translit=Komarî Êraq is a country in Western Asia. It is bordered by Turkey to Iraq–Turkey border, the north, Iran to Iran–Iraq ...
.
Steenbeck and Zippe, before being allowed to leave the Soviet Union, were put into quarantine in the second half of 1952. During the quarantine period, they only performed unclassified work. First they went to
Leningrad
Saint Petersburg ( rus, links=no, Санкт-Петербург, a=Ru-Sankt Peterburg Leningrad Petrograd Piter.ogg, r=Sankt-Peterburg, p=ˈsankt pʲɪtʲɪrˈburk), formerly known as Petrograd (1914–1924) and later Leningrad (1924–1991), i ...
, after which they worked in the Institute of Semiconductors of the Academy of Sciences in
Kiev
Kyiv, also spelled Kiev, is the capital and most populous city of Ukraine. It is in north-central Ukraine along the Dnieper River. As of 1 January 2021, its population was 2,962,180, making Kyiv the seventh-most populous city in Europe.
Ky ...
. They both left the Soviet Union in 1956.
Return to (East) Germany

In 1956, Steenbeck became an ordinarius professor of plasma physics at the
Friedrich Schiller University of Jena
The University of Jena, officially the Friedrich Schiller University Jena (german: Friedrich-Schiller-Universität Jena, abbreviated FSU, shortened form ''Uni Jena''), is a public research university located in Jena, Thuringia, Germany.
The un ...
, and, from 1956 to 1959, he was also director of the Institute for Magnetic Materials at
Jena
Jena () is a German city and the second largest city in Thuringia. Together with the nearby cities of Erfurt and Weimar, it forms the central metropolitan area of Thuringia with approximately 500,000 inhabitants, while the city itself has a po ...
. From 1958 to 1969, he was director of the German Academy of Science Institute for
Magnetohydrodynamics
Magnetohydrodynamics (MHD; also called magneto-fluid dynamics or hydromagnetics) is the study of the magnetic properties and behaviour of electrically conducting fluids. Examples of such magnetofluids include plasmas, liquid metals ...
, also in Jena. From 1957 to 1963, he was the head of the Technological Science Bureau on Reactor Construction, in Berlin. From 1962 to 1964, he was vice-president and in 1965 president of the German Academy of Science. In 1970, he was president of the East German Committee on European Security. In 1976, Steenbeck was honorary president of the East German Research Council. He died in
East Berlin
East Berlin was the ''de facto'' capital city of East Germany from 1949 to 1990. Formally, it was the Soviet sector of Berlin, established in 1945. The American, British, and French sectors were known as West Berlin. From 13 August 1961 u ...
.
The ''Max-Steenbeck Gymnasium'' in Cottbus, an academic high school offering extended mathematical-scientific-technical training, was named in his honour. .
Max-Steenbeck-Gymnasium
– Cottbus.
Selected literature
* W. Kossel and M. Steenbeck ''Absolute Messung des Quantenstroms im Röntgenstrahl'', ''Zeitschrift für Physik'' Volume 42, Numbers 11-12, 832-834 (1927). The authors were cited as being from the ''Physikalisches Institut'', Kiel. The article was received on 14. March 1927.
*Alfred von Engel and Max Steenbeck ''On the Gas-Temperature in the Positive Column of an Arc'' ''Phys. Rev. '' Volume 37, Issue 11, 1554 - 1554 (1931). The authors were cited as being at ''Wissenschaftliche Abteilung, der Siemens-Schuckertwerke A.-G.'', Berlin. The article was received on 28 April 1931.
Books
*Max Steenbeck ''Probleme und Ergebnisse der Elektro- und Magnetohydrodynamik'' (Akademie-Verl., 1961)
*Max Steenbeck, Fritz Krause, and Karl-Heinz Rädler ''Elektrodynamische Eigenschaften turbulenter Plasmen'' (Akademie-Verl., 1963)
*Max Steenbeck ''Wilhelm Wien und sein Einfluss auf die Physik seiner Zeit'' (Akademie-Verl., 1964)
*Max Steenbeck ''Die wissenschaftlich-technische Entwicklung und Folgerungen für den Lehr- und Lernprozess im System der Volksbildung der Deutschen Demokratischen Republik'' (VEB Verl. Volk u. Wissen, 1964)
*Max Steenbeck ''Wachsen und Wirken der sozialistischen Persönlichkeit in der wissenschaftlich-technischen Revolution'' (Dt. Kulturbund, 1968)
*Max Steenbeck ''Impulse und Wirkungen. Schritte auf meinem Lebensweg.'' (Verlag der Nation, 1977)
Bibliography
*Albrecht, Ulrich, Andreas Heinemann-Grüder, and Arend Wellmann ''Die Spezialisten: Deutsche Naturwissenschaftler und Techniker in der Sowjetunion nach 1945'' (Dietz, 1992, 2001)
* Barwich, Heinz and Elfi Barwich ''Das rote Atom'' (Fischer-TB.-Vlg., 1984)
*Heinemann-Grüder, Andreas ''Keinerlei Untergang: German Armaments Engineers during the Second World War and in the Service of the Victorious Powers'' in Monika Renneberg and Mark Walker (editors) ''Science, Technology and National Socialism'' 30-50 (Cambridge, 2002 paperback edition)
*Hentschel, Klaus (editor) and Ann M. Hentschel (editorial assistant and translator) ''Physics and National Socialism: An Anthology of Primary Sources'' (Birkhäuser, 1996)
*Holloway, David ''Stalin and the Bomb: The Soviet Union and Atomic Energy 1939 – 1956'' (Yale, 1994)
*Naimark, Norman M. ''The Russians in Germany: A History of the Soviet Zone of Occupation, 1945-1949'' (Hardcover - Aug 11, 1995) Belknap
*Oleynikov, Pavel V. ''German Scientists in the Soviet Atomic Project'', ''The Nonproliferation Review'' Volume 7, Number 2, 1 – 30
(2000)
The author has been a group leader at the Institute of Technical Physics of the Russian Federal Nuclear Centre in Snezhinsk (Chelyabinsk-70).
*Riehl, Nikolaus and Frederick Seitz
Frederick Seitz (July 4, 1911 – March 2, 2008) was an American physicist and a pioneer of solid state physics and lobbyist.
Seitz was the 4th president of Rockefeller University from 1968–1978, and the 17th president of the United States Nat ...
''Stalin’s Captive: Nikolaus Riehl and the Soviet Race for the Bomb'' (American Chemical Society and the Chemical Heritage Foundations, 1996) . This book is a translation of Nikolaus Riehl’s book ''Zehn Jahre im goldenen Käfig (Ten Years in a Golden Cage)'' (Riederer-Verlag, 1988); Seitz has written a lengthy introduction to the book. This book is a treasure trove with its 58 photographs.
External links
Lawrence and His Laboratory
- ''II — A Million Volts or Bust'' in Heilbron, J. L., and Robert W. Seidel ''Lawrence and His Laboratory: A History of the Lawrence Berkeley Laboratory', Volume I.'' (Berkeley: University of California Press, 2000)
Tracking the technology
– Nuclear Engineering International, 31 August 2004
– William J. Broad ''Slender and Elegant, It Fuels the Bomb'', ''New York Times'' March 23, 2004
Notes
{{DEFAULTSORT:Steenbeck, Max
1904 births
1981 deaths
20th-century German physicists
Scientists from Kiel
People from the Province of Schleswig-Holstein
East German scientists
German expatriates in the Soviet Union
Foreign Members of the USSR Academy of Sciences
Recipients of the Lomonosov Gold Medal
Members of the German Academy of Sciences at Berlin
Volkssturm personnel